Blue Track Technology - Works on more surfaces than optical or laser technology. Nano Transceiver - Leave it plugged in your notebook when you’re on the go. The mouse has its own on/off switch. Up to 8 months battery life - Power status indicator lets you know when your battery runs low. Comfort - Designed by ergonomic experts for comfort in either hand. Keep moving with a transceiver that stays in your mobile PC when you go and a mouse that works on more surfaces with Microsoft Blue Track technology!
