A2749 Apple Watch Series 8 Ultra (49mm 2 pk AG10 389A Watch Battery LR1130 390 189 L1131 LR54 D389 Alkaline 5PCS SAITEK RAT_9 Other Batteries Wholesale Pricing 540mah 3.7V for Watch Batteries. GENERAL SPECIFICATIONSProduct: Watch Battery Only Battery Cell Composition: Silver Oxide Recommended Uses for Product: Watch Battery Count: 1 Cell Model Compatibility: Fit AK489TTG 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: AK489TTG_K0068600