We're taking a break! We need some mulled wine, biscuits and sofa time too. Please note our special opening hours around Christmas and New Year:

• Last shipping day before the holidays: 22 December 2025 – after that, the sleighs are full and the reindeer are tired.

• Closed: from 23 December 2025 to 4 January 2026 inclusive – we'll be hiding behind the Christmas tree.

• First shipping day in the new year: 5 January 2026 – freshly rested, with good intentions and hopefully less gingerbread on our hips.

During this time, orders can of course be placed, but shipping will resume on 5 January 2026.

We thank you for your understanding and wish you a happy holiday season and a good start to the new year!

Advent is a time full of anticipation, warmth and little moments of happiness. With our Advent calendar, we want to bring this feeling to life for you – day by day, door by door.

Behind every door is a lovingly selected highlight that makes the wait until Christmas a special experience. Whether practical everyday helpers, elegant little gifts or creative specials – every gift has been carefully chosen to bring a smile to your face.

But our Advent calendar is more than just a collection of lovely surprises: it is an invitation to consciously enjoy the magic of the Advent season. Every moment of opening becomes a little celebration that increases the anticipation of Christmas.

Look forward to:
• Exclusive products that accompany and enrich your everyday life
• Exquisite and creative little gifts that will surprise and inspire you
• Attractive discounts and special gifts that we have hidden behind the doors for you

Get excited, because every day a new highlight awaits you that will make the Advent season even more beautiful. Let yourself be enchanted and enjoy the festive atmosphere – door by door, wonder by wonder.

Langer® is an Austrian manufacturer of high-quality magnetic clasps for jewellery. It has been producing handmade clasps from precious metals such as silver, gold and stainless steel since 1968 and is considered the market leader in this field.

Langer magnetic clasps – quality that connects

Discover Langer's patented magnetic clasps: elegant, secure and easy to use. Thanks to their strong magnetic force, your jewellery fastens reliably and can be opened effortlessly – without any complicated fiddling.

• Handcrafted in Austria
• High-quality materials such as silver, gold (8, 14 and 24 carat) and stainless steel
• Secure hold & long-lasting quality
• Comfortable and stylish for every occasion

With Langer magnetic clasps, wearing jewellery becomes a pleasure – practical, elegant and unique.

Look forward to our Advent promotion:

Buy two Langer magnetic clasps and receive a delicious chocolate calendar with 24 doors.

Here's how it works: simply add two Langer magnetic clasps to your shopping basket and you will receive a free calendar with your order. Promotion valid while stocks last.

Since 1 November, we have added Maxell button cells and lithium cells to our product range.

Maxell is a world-renowned manufacturer from Japan that has been synonymous with high-quality batteries and storage media for over 60 years. The name ‘Maxell’ is derived from Maximum Capacity Dry Cell and underlines the company's commitment to developing powerful and long-lasting energy solutions.

By adding Maxell products to our range, we are expanding our offering with a strong brand that is known for quality, reliability and innovation. Customers benefit from long-life batteries that are ideal for use in watches, remote controls, medical devices and many other applications.

This sends a clear signal about quality and diversity: Maxell batteries are now available from us – for anyone who values performance and reliability.

DCN Balance Staff Catalogue

Discover the DCN Balance Staff Catalogue, the indispensable reference work for watchmakers.

Balance staffs are the heart of every watch – they form the axis of the balance wheel and ensure the precise oscillation that sets the pace. When repairing or restoring a watch, the right balance staff is crucial for the watch's accuracy.

• Clear identification: Thanks to standardised DCN numbers, you can quickly find the right balance staff for your movement.
• Wide selection: The catalogue includes balance staffs for numerous calibres and manufacturers.
• Fast ordering: Simply enter the DCN number and select the correct staff.

Whether for wristwatches, pocket watches or large clocks – with the DCN balance staff catalogue, you always have the right spare part at hand. This saves you time searching and ensures that your repair is carried out professionally and permanently.

Rare watch spare parts at Gebrüder Boley – tradition meets diversity

Since our founding in 1860, we at Gebrüder Boley have built up an impressive stock of watch spare parts – a veritable treasure trove for watchmakers and lovers of mechanical timepieces. Over the decades, we have collected hundreds of thousands of components, from common calibres to rare individual parts that are hardly available today.

Available online and beyond
Many of our spare parts are already catalogued and can be conveniently viewed in our online shop. But the heart of our collection lies hidden: the majority of historical and rare watch parts have not yet been digitally recorded and are therefore not visible online.

Individual enquiries welcome
If you are looking for a specific part – whether for repair, restoration or collection – please do not hesitate to contact us directly. Our experts are available to assist you via chat or email. Thanks to our extensive network and decades of experience, we can supply many parts directly from our warehouse or procure them specifically for you.

Your advantage with Boley
• Extensive stock of historical and modern spare parts
• Personal advice from experienced specialists
• Access to an international network of watch parts suppliers
• Fast and reliable processing of your enquiry

Discover the world of watchmaking with Gebrüder Boley – where tradition, precision and service have been at home for over 160 years.

Multi-purpose tool „Horia AMF 2015“ for working on cases and metal straps

Multi-purpose tool for watchmakers, which finds its application in daily use for various functions:

• Case opener for pressed backs
• Bezel lifter
• Strap shortener for metal straps
• Removal and insertion tool for pressed tubes

The tool impresses with various adjustment possibilities, among others the height of the spindle and the work table can be adjusted. The multifunctional tool is available in three different versions:

Master set, Boley no. 606900:
• for lifting off pressed case backs and bezels
• for unscrewing and screwing in screwed and pressed tubes & pushers
• for shortening metal bracelets
• Supplied with various inserts (basic equipment)

Basic-Set A, Boley-No. 606905:
• for lifting off pressed case backs and bezels
• Delivery without inserts no. 606907, these must be ordered separately

Basic-Set B, Boley-no. 606906:
• for unscrewing and screwing in screwed and pressed tubes & pushers
• without inserts no. 606907, these must be ordered separately

BOLEY cash-back campaign – GRS control units with attractive cashback bonuses

Secure up to € 350,– now!

To kick off the autumn, Gebrüder BOLEY is offering an exclusive special promotion for anyone who wants to buy a GRS control unit: when you purchase a new device, you will receive up to € 350,– cashback.

Order deadline: 30 September 2025 at the latest

Your cashback bonus:
GRS GraverMach® AT Cash back bonus € 350,–
GRS GraverMax® Cashback bonus € 250,–
GRS GraverSmith® Cashback bonus € 150,–

How it works: Order one of the new devices listed above. After purchase, you will receive a credit note for the corresponding amount.

Which device is right for you?

• GraverMach® AT: With integrated Airtact® technology for particularly precise control by hand or foot – ideal for demanding applications.
• GraverMax®: The popular standard model with two connections, optimised for foot control.
• GraverSmith®: Compact entry-level device with one connection – perfect for engravers and setters looking for a reliable, simple system.

All GRS® control devices are designed for daily use – robust, intuitive and durable. Whether in the workshop or studio, they deliver the performance that professionals trust.

Take advantage of this opportunity now and order your new GRS control unit – the cash-back promotion runs until 30 September 2025 only.

If you have any questions or would like to place an order, please contact: support@boley.de

Exclusive CNC marking with the Gravotech M20X – expertise meets precision

Save the date: 14 October 2025 – Open Day in Stuttgart

As a new Gravotech Channel Partner, Gebr. Boley and manufacturer Gravotech cordially invite you to their Open Day. Look forward to an exciting day all about professional CNC engraving technology.

Date: Tuesday, 14 October 2025
Location: Gravotech Showroom, Holderäcker 4, 70499 Stuttgart-Weilimdorf
Time: 9:00 a.m. – 4:00 p.m.

You can now register for our Open Day. On site, you can expect individual advice, practical demonstrations and an in-depth exchange with the experts from Boley and Gravotech – tailored to your requirements and wishes.

Experience it live: The M20X – compact, versatile, precise
Discover our multi-talented machine for the watch and jewellery industry:

• Engraving on rings, pendants and watch cases
• Personalisation directly at the point of sale
• Intuitive operation & maximum engraving precision
• Highlight: We will also be presenting other Gravotech solutions – from innovative laser technology to large-format engraving systems for your extended product requirements.

Trade-in offer until 31st October 2025
When you purchase a new M20X, you will receive an attractive cashback of € 800,– for your old M20. Simply provide the serial number of your old device and you will receive a separate credit note.

Further information about the promotion can be found here.

We look forward to your participation and your registration by email to support@boley.de.

Your BOLEY team

Cavitation in ultrasonic technology

Cavitation is a physical phenomenon that plays a central role in ultrasonic cleaning. It occurs when high-frequency sound waves (typically between 20–80 kHz) are introduced into a liquid. This causes microscopic vapour bubbles to form, which grow rapidly and then collapse. These implosions generate high local temperatures and pressure peaks that remove dirt particles from surfaces – even in the finest structures and hard-to-reach areas.

Advantages of cavitation:
• Thorough cleaning without mechanical action
• Gentle on sensitive materials such as glass, metal and ceramics
• Effective on complex geometries (e.g. medical instruments, watch parts)
• Environmentally friendly, as less chemicals are often required

What is cavitation?
Cavitation refers to the formation and collapse of microscopic vapour bubbles in a liquid, triggered by rapid pressure changes. In ultrasonic technology, this effect is specifically used to clean surfaces effectively – even where brushes or chemicals fail.

The cavitation process
• Generation of ultrasonic waves
• An ultrasonic transducer converts electrical energy into high-frequency sound waves (typically 20–80 kHz).
• These waves propagate in the cleaning fluid and generate alternating high- and low-pressure phases.
• Formation of cavitation bubbles
• During the low-pressure phase, tiny vapour bubbles (microbubbles) form in the liquid.
• These bubbles are unstable and grow over several cycles.
• Collapse of the bubbles
• During the high-pressure phase, the bubbles implode abruptly.

Cleaning effect
• The implosion generates microjets and shock waves.
• These act directly on the surface of the object to be cleaned.
• Dirt, oil, oxidation and particles are mechanically removed – even in crevices, boreholes or rough structures.

Temperature of the liquid:
• Higher temperatures promote bubble formation and improve the cleaning effect.
• Type of cleaning liquid

Soprod is a Swiss manufacturer of watch movements and components and is now part of the Festina Group.

Soprod SA Les Reussilles was founded on 16 September 1966 in Tramelan in the Swiss Jura with the aim of manufacturing mechanical watch components on an industrial scale.

Later, Soprod became a general movement manufacturer and assembled movements for other companies, including ETA. The company was acquired by Léman Capital and merged with Swiss quartz specialist SFT Group in 2005 to form a new company. The company hoped to create an alternative to the ETA 2892-A2.

This group was acquired in 2007 by Peace Mark from Hong Kong, which, however, went bankrupt the following year. STM was bought back in 2008 by Festina's management, without the quartz production for the mass market that the company had established in China.

Today, Soprod is the parent company within the Festina Group, which manufactures components for Swiss watches.

Soprod's most important mechanical movement is the Soprod A-10, which is based on the Seiko 4L family. On this basis, Soprod also manufactures a range of complications, including large date, second time zone, power reserve indicator, 24-hour display, chronograph, moon phase and more. Soprod also manufactures escapements and balance springs for other manufacturers.

Nacre Pearls are high-quality artificial pearls that are designed to look and feel very similar to real pearls. They consist of a crystal core that is coated with several layers of nacre (mother-of-pearl) - hence the name.

Properties of Nacre Pearls:

• Silky-smooth surface with a mother-of-pearl-like lustre
• High shape and colour uniformity - ideal for jewellery design
• Robust and durable as they are not as sensitive as real pearls

They are particularly popular for DIY jewellery, pearl necklaces, bracelets or earrings. Nacre is the material that real pearls are made of - it is formed from shells and is known for its iridescent lustre.

Real pearls vs. nacre pearls - recognising the differences
All important differences are listed in the table. If two real pearls are rubbed lightly against each other, you will feel a slightly rough resistance - with artificial pearls, the surface is smooth and glides without friction.

How to work with Nacre Pearls
The pearls are threaded with normal pearls - with pearl thread, wire or elastic band. The ends are stylishly secured with crimp beads and calottes.
These beads are also ideal for earrings, bracelets, necklaces, hair jewellery or buttons.

Since 1866, GRIFFIN 1866 has stood for the highest quality in the manufacture of stringing materials. Founded by trimmer Karl Schinle in Schramberg, the company recognised the jewellery industry's growing demand for professional thread for necklaces and colliers at an early stage.

Thanks to close contacts with the jewellery town of Pforzheim, GRIFFIN quickly developed into the leading manufacturer of pearl silk - then as now a purely natural product with a special status.

GRIFFIN established itself worldwide under this brand and today offers modern high-tech fibres and jewellery wires in addition to classic silk.

Innovation and technical expertise are still central pillars of the company today. In-house machine developments and state-of-the-art production methods guarantee consistently high product quality.

Gebrüder Boley - Your specialist for high-quality beading ropes and accessories

For decades, Gebrüder Boley has been a close partner and leading supplier of the highest quality pearl silk and accessories. Our experience and our range guarantee quality, durability and perfection, so that every piece of jewellery is given its unique shine.

• Exquisite pearl silk for precise craftsmanship
• Comprehensive accessories for professional jewellery design
• Reliable quality thanks to many years of expertise

Discover our range and be inspired by our selection!

Since 1793, ETA SA has been setting standards in the development and construction of the finest movements. Deep-rooted expertise has laid the foundation for one of the world's largest manufacturers of wristwatches and movements. Research, innovation and first-class service form the foundation of its philosophy: every single movement - whether quartz or mechanical - receives the utmost attention. The best materials, outstanding quality, precision, reliability and performance are the core values of their products.

As a leading player in the watch industry, ETA draws on a unique heritage. With unrivalled technical, industrial and human expertise, they use their decades of knowledge to actively shape the future.

Boley - your reliable partner for ETA spare parts

For decades, Boley has been a trusted partner of ETA when it comes to high-quality spare parts for quartz and mechanical movements. Our extensive stock offers a huge selection of ETA components, so you will always find the right parts for your watch.

• Browse our database - Find precise spare parts for ETA movements.
• Large selection - From quartz movements to mechanical components - all in one place.
• Customised advice - If the part you are looking for is not in our database, please do not hesitate to contact us directly.

Our experience and our product range ensure that your movements can be serviced with reliable original parts. We are here for you - contact us!

The weekend workshop on 17.05. and 18.05.2025 on the subject of PUK fine welding was a complete success!

The latest fine welding technology was the topic of this seminar, which took place on the premises of Gebrüder Boley. In cooperation with Lampert Werktechnik, Gebrüder Boley also succeeded in organising a workshop on PUK fine welding in 2025. The participants took the opportunity to work live on the latest generation of PUK 6.1 welding machines.

The 2-day seminar took place last weekend on Saturday, 17 May and Sunday, 18 May 2025 under the direction of Susanne Englert, trained master silversmith and lecturer at the state drawing academy in Hanau.

The workshop focussed on the following topics:

• Repairs to delicate workpieces, including the welding of ear studs and settings.
• Welding in MICRO and PIN mode for welding on ear stud pins
• Fixation welding for attaching objects
• Treatment of individual special applications

The participants had brought their own jewellery and watches with them. Mrs Englert was able to use these as examples to work out solutions to problems for all participants and thus provide important tips for everyday workshop work. The focus was also on the exchange of experiences between the participants.

The participants spoke of a very successful workshop, which is offered annually in this form by the company Gebrüder Boley. We would like to take this opportunity to express our sincere thanks to all participants and especially to Mrs Susanne Englert and Lampert Werktechnik for their commitment.