Logitech(R) M310 Wireless Optical Mouse, Indigo Scroll, Silver
Up to 12 months of use without changing the battery Designed for comfortable use with either hand. The contoured design has soft rubber side grips. The nano-receiver is small enough to stay in your computer's USB port. Receiver does not require stowing even during travel. Advanced 2.4GHz wireless connectivity means no more hassles with mouse cords. Provides a reliable connection with virtually no delays or dropouts. Provides smooth, responsive cursor control on a variety of surfaces. Smart sleep mode extends battery life. The on/off switch also helps conserve energy. An indicator light lets you know when battery needs changing.