HATTORY-SEIKO 2E20 Exploded diagram Brand HATTORY-SEIKO Caliber 2E20 Size 4 3/4 Function o. SC Version Hands 0.45x0.90 Stem 351-206 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery MovementsArtno.brandcaliberSizehandsfunctionspecial160928HATTORY-SEIKO2E204 3/40.45x0.90o. SC Watchparts Part NocaliberdescriptionoriginalArtno.250Hour wheel271-2029840271202405Stellwelle351-20698403512064000Electronic module4000-208984040002084060Coil -red4002-2029840400220240602E20Coil -red4002-35498404002354