ISA 815.20 Exploded diagram BrandISACaliber815.20Size11 1/2FunctionSC-D(6) BIGDATE-CHR 1/5SVersion2 EYES ( 2-10 )Hands0.90x1.50x0.20/0.16Stem= 815 eigenStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)Battery395MovementsArtno.brandcaliberSizehandsfunctionspecialISA815.2011 1/20.90x1.50x0.20/0.16CHR-CLD(Zeiger)167975ISA8171/20111 1/20.90x1.50x0.20/0.16SC-D(6) -CHR 1/5S2 EYES ( 2-10 ),60S@2, 30M@10 WatchpartsPart NocaliberdescriptionoriginalArtno.401BWinding stem943004018154000BElectronic module8151.105139430400081514401BBattery limiting spring (+)815.20762.049430440181554401BBridle (+)815.20761.01943044018154402BBattery connection (-)815.207609430440281534405BBattery connection8161.20762.03943044058161