1.55 Volt Watch Battery 370 Replaces SR920W: Amazon.co.uk: Fashion Amazon.com: POWEROWL SR626SW 377 Watch Battery 24 Pack High Capacity Duracell Silver Oxide 309 393 1.5 V 80 Ah Electronic Watch Battery 1 pk Duracell Silver Oxide 309 393 1.5 V 80 Ah Electronic Watch Battery 1 pk Amazon.com: DURNERGY 394 Watch Battery 100pack, 1.5 Volt Alkaline LR936. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit HR003_5 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: HR003_5_K0051309