Now Introducing: Ship In Watch Battery Service The Jewelry Center How to get to the battery? : r watchrepair Swatch watch battery RENATA original electronic 394 329 390 377 317 How to Replace the Watch Battery on your Swatch Watch Swatch Battery. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit CA301227SSRD Operating Temperature Range: 40 Degrees Celsius to +85 Degrees Celsius Shelf Life: 5 years Leakage Resistance: Anti Leak Design Movement Compatibility: Quartz 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: CA301227SSRD_K0063524