Watch Battery For Nike High Capacity Watch Battery NW 1285BKBK Watch Battery Size Guide at Israel Patch blog High Capacity Rechargeable 18650 3.7V 2000mAh Lithium Ion Battery for. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit NW 1285BKBK Operating Temperature Range: 40 Degrees Celsius to +85 Degrees Celsius Shelf Life: 5 years Leakage Resistance: Anti Leak Design Movement Compatibility: Quartz 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: NW 1285BKBK_K0060764