ECO WORTHY 48V 50Ah Metal Case Lithium Battery,Built in 50A BMS, 2~3C Energizer SR616SW Watch Batteries, 1.55V Silver Oxide Battery Cell, 5 Eveready 509 Battery Heavy Duty Lantern 6V 6V Batteries Energizer SR616W SW Button Battery for Watches and Toys Ozbatteries Your Guide to Watch Batteries GP Batteries. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit 506 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: 506_K0066687