Amazon.co.uk: Watch Batteries Watch Batteries Watch Accessories Amazon.com: Renata Single Watch Battery Swiss Made 362 or SR 721 SW or Energizer SR936W SW Button Battery for Watches and Toys Ozbatteries 4 x Energizer 335 Watch Batteries, SR512SW Battery Best Buy Canada Swiss Battery 377 364 371 321 395 394 335 329 379 362 Watch Button Energizer Watch Batteries 364 363 SR621SW Battery New : Amazon.ca. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 3635 GW 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: 3635 GW_K0064147