Microsoft Wireless Mobile Mouse 3500 USB ER English Gold Metal Microsoft Wireless Mobile Mouse 3500. Input device: RF Wireless, BlueTrack, Office. Connectivity: 2.4. Receiver: USB. Energy management: Batteries, AA. Weight & dimensions: 56.2 x 95.4 x 40.3, 13.1 x 18.3 x 4.4, 1.6. Other features: Windows XP, Vista, 7, Keep moving with a transceiver that stays in your mobile PC when you go and a mouse that works\non more surfaces with Microsoft® BlueTrack Technology™! BlueTrack Technology™\nMicrosoft BlueTrack Technology combines the power of optical with the precision of laser for remarkable tracking on virtually any surface. Plug-And-Go Nano Transceiver\nLeave the Nano Transceiver plugged in when you’re on the go, or stow it in the mouse. 8-Month Battery Life\nUse your mouse without power interruption for up to 8 months on a single battery. Battery status indicator tells you when battery power is low. ON/OFF Switch\nConserve more battery power by turning your mouse off when not in use.\n\nComfortable in Either Hand Use your mouse with your left or right hand—ambidextrous design makes it comfortable either way.