10 x 377 Renata Watch Batteries : Amazon.co.uk: Fashion 10 x 1.55V Button Coin Cell Watch Battery Batteries AG7 AG 7 LR927 3 X Duracell 377 SR626SW SB AW AG4 1.55v Silver Oxide Watch Battery Watch Batteries Duracell 371 370 SR920SW 280 31 1.55v Silver Oxide Watch Battery. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit R13777702 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: R13777702_K0063845