SEIKO 7D48 Exploded diagram BrandSEIKOCaliber7D48Size13 1/4FunctionSC-BIGD/12-MD/6-JAHR/9-AUT-QuarzVersion24Std/4HandsStem351-510Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)Battery3023-24XWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem351-5109840351510