HATTORY-SEIKO 7T42B Exploded diagram Brand HATTORY-SEIKO Caliber 7T42B Size 11 1/2 Function SC-CLD-CHR-ALARM Version Hands 0,65x1,10 Stem 351-580 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery 399 Watchparts Part NocaliberdescriptionoriginalArtno.2507T32Hour wheel H1= 238 Standard271-58898402715884000BElectronic module4000-71298404000712