Amazon.com: Renata Watch Battery 321 0%Hg Mercury Free X 3 : Health Renata Mercury Free Watch Battery 373 (SR916SW): Amazon.co.uk: Fashion Amazon.com: Renata Single Watch Battery Swiss Made 362 or SR 721 SW or Renata Silver Oxide Swiss Made Watch Battery 370 (SR920W): Amazon.co Energizer Watch Electronic Lithium Coin 1616 Battery 1 Pack, 1 pk. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 1618 Operating Temperature Range: 40 Degrees Celsius to +85 Degrees Celsius Shelf Life: 5 years Leakage Resistance: Anti Leak Design Movement Compatibility: Quartz Swiss 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: 1618_K0066419