ETA 902.501 Exploded diagram Brand ETA Caliber 902.501 Size 6 3/4x8 Function SS Version Hands 0.70x1.20x0.20 Stem 4303 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery 364 Movements Artno.brandcaliberSizehandsfunctionspecial162112ETA902.5016 3/4x80.70x1.20x0.20SSH1= 0.94,Swiss Made WatchpartsPart NocaliberdescriptionoriginalArtno.100BMain plate jewelled920001009025110BBarrel and train wheel bridge920001109025203902.001third wheel920002039020210902.001Third wheel920002109020227BSweep second wheel920002279025242BCannon pinion with driver920002429025250902.001Hour wheel920002509020259902.001Hour wheel spring - clip920002599020260BMinute wheel920002609025405902.002Winding stem -mouv.part920004059020407902.001Clutch wheel920004079020435902.001Yoke spring920004359020443902.001Setting lever assembled920004439020462902.001Minute train bridge9200046290204000902.001Electronic module9200400090204021902.001Stator9200402190204211BRotor9200421190254255902.0019200425590204401902.001Bridle (+)9200440190204929101.001Battery920049291010