Product basic info Primary colours: Grey Primary detailed colours: Metallic silver Diameter unit: 6.8 mm Depth unit: 1.6 mm Weight unit: 0.25 g Physical properties Number of pieces: 1 Technical data Battery capacity: 13 mAh Battery system: Ag Power supply Battery voltage rating: 1.55 V Battery composition: Silver-Oxide Battery IEC size: SR65 (LR65, V321, SR616SW, 321) (EN)