KP 401522 3.7v 400mAh rechargeable battery for Smart Watch, Like W26 Renata 315 SR716SW Batteries 1.55V Silver Oxide 315 Watch Battery (2 Watch 2x Renata Watch Battery Swiss Made All Sizes: Amazon.co.uk: Electronics Amazon.com: Original SEIKO Capacitor Battery 3023.24L : Health & Household Duracell Silver Oxide 309 393 1.5 V 80 Ah Electronic Watch Battery 1 pk. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 40323 15 Operating Temperature Range: 40 Degrees Celsius to +85 Degrees Celsius Shelf Life: 5 years Leakage Resistance: Anti Leak Design Movement Compatibility: Quartz Swiss or Chinese or Japanese Movement Water Resistance Compatibility: Suitable for 50m Water Resistant Watches Mercury Free: Environmentally Friendly (0% Hg) High Low Temperature Tolerance: Extended Performance in Extreme Climates SKU: 40323 15_K0054464