1. Can be a key control: power switch. 2. Enjoy 2.4G wireless technology, office casual games applicable. 3. Innovative aluminum side roller design. 4. Vertical side horizontal operation design, bid farewell to the "mouse hand". 5. Wireless receiver, can be received within 10 meters of wireless.<br><br>Wireless technology: 2.4GHz Wireless distance: 10m Mini switch life: 10 million times Number of keys: 6 keys Battery type: 1 * AA batteries (not included) Work: Photoelectric Product weight:93g Item size: 12.5x8x5.5cm Rated voltage / current: 1.5V/5mA Four-speed DPI switching: 800~1600~2400~3600DPI System Requirements: 98/Me/2000/XP/Vista/ Win 7/Win8/win10 or latest. Colour:Black Material:plastic<br><br>Package Contents: 1 x Mouse 1 x USB Receiver 1 x English User Manual<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.