Features: Great Part to replace the broken and non working CMOS Battery for Genuine Seiko MS621F MS621FE This CMOS Battery is guaranteed to work. The small amount of memory on a computer motherboard that stores the BIOS settings. To reset the BIOS settings to their default levels No memory effect. Chargeable even if it has not been used up yet. High capacity battery The real time clock battery CMOS BIOS backup battery. Will fix the following error codes: Systems battery error / System CMOS checksum bad / System Timer error / Real-Time Clock Error Compatible with: Seiko MS621F Seiko MS621FE Specifications: Battery Chemistry: Lithium Voltage - Rated: 3V Capacity: 5.5mAh @ 15A Termination Style: Requires Holder Standard Charge Current: 15A Lead Free Status: Lead Free RoHS Status: RoHS Compliant Diameter: 0.7cm/0.28inch Quantity: 2 Pcs Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Contents: 2 Pcs x Rechargeable Battery