Kensington PocketMouse Pro K72268US 3-Button Wireless Laser Scroll Mouse (Silver/Black) Kensington PocketMouse Pro K72268US 3-Button Wireless Laser Scroll Mouse General Features: Color: Silver/Black Comfortable, ergonomic design 2.4 GHz Wireless technology 3-button design (3rd button acts as scroll wheel) 20x as much surface sensitivity as optical Includes USB receiver Range of up to 30 feet Advanced power saving technology turns off the mouse when traveling