DESC: The Logitech® V450 Nano Cordless Laser Mouse for Laptops– Plum Purple is always ready when you are. Featuring a nano-receiver small enough to stay in your laptop all the time – even when you pack your laptop away – the V450 Nano is always ready to go. Advanced power management gives you up to 1 year of battery life, and the gently contoured shape with soft rubber grips gives you exceptional comfort.