Perman Slim 2.4 GHz Optical Wireless Mouse Mice with USB Receiver for Macbook Computer PC Laptop Gamer White Size: 115 x 60 x 20mm. Power: 2 x AAA Batteries(Not Included). Current: 1.5mA 1.5V. 2.4Ghz Wireless Optical Mouse. Elegant, Ultra Slim, Comfortable Grip. 3 Buttons with scroll wheel. Scroll easily in any direction. Wireless Technology works on most surfaces. Mini Receiver can be contained and easy to carry. Maximum acceleration: 14 inches per second. Effective: 2.4GHz wireless transmission up to10 metres operating distance. Intelligent connectivity, No Need to Code, Plug & Play.