... , and all sorts of other tasks, Enable wireless connection to Bluetooth headset Supported Operation system : Windows 98, 98SE, ME, 2000, XP, ... life to up to twice of your factory battery. * Cell type: Lithium-ion* Voltage: 3.7V * Capacity: 3500mah * Includes ... , and all sorts of other tasks. Enable wireless connection to Bluetooth headset. Supported Operation system : Windows 98, 98SE, ME, 2000, XP ...