Amazon.com: DURNERGY 394 Watch Battery 10pack, 1.5 Volt Alkaline LR936 Energizer 394 380 SR936SW High Drain Silver Oxide Watch Battery, 1.55V 20 X AG9 194 G9 LR194 S33 L936 LR936H 0%Hg Alkaline Watch Thermometer EB BR890ABY Battery for Samsung Galaxy Watch 4 SM R870 SM R875 SM R875U AG9 X 10 T&E 394A, CX194, LR936W SR936SW WATCH BATTERY: Amazon.co.uk. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 894 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: 894_K0066586