Choosing the Right Watch Battery for Seiko SNK809: A Complete Guide Energizer Button Cell Watch Batteries, Type 394 380, Pkg 5, Tear Strip Watch Battery Cross reference Chart The Battery Cell Products 20pcs 10Pcs AG9 LR936 394 Watch Battery Button Cell Button Batteries. 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