TISSOT 870 Brand TISSOT Caliber 870 Size 12 Function Version Hands Stem 6328 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) 1,30x10,50x0,13 Mainspring (subs.) = OMEGA 860-1208 Battery Watchparts Part NocaliberdescriptionoriginalArtno.401= 860Winding stem860-11068026328705320Escape wheel -pinion straigt piv.320-130596503201305770Mainspring860-120896508601208