This new genuine original Murata 3.0v button cell battery is currently in stock under part number CR2050W. Product specifications include 3 V voltage, 5 mm height, and 20 mm diameter. Further product details include 345 m capacity and 1 units per pack. Product specifications also show that it is not rechargeable. If you need to double-check fit, use Fixit Fox Finder or contact customer services before ordering.