2.4G wireless transmission using 2.4G wireless connection, say goodbye to the "line" system, desktop refreshing and beautiful Ergonomic comfort grip fits the palm curvature hand support is , long time use also no soreness Fast response, stable and efficient move and click can be performed instantly USB interface plug-and-play universal USB interface, not picky terminal, widely compatible, plug-and-play Wireless transmission - and precise - comfortable hand keyboard computer, laptop, desktop computer, all-in-one computer can be used Model No: OPM 280 Product Size:113mm x 62mm x 33mm Product weight: 58g Transmission : 2.4G Power supply: 1 *AA battery (battery not included) Return rate: 250Hz/s Movement speed: 30 inches/sec Colour:White Material:ABS Package Contents: 1 x Wireless Mouse 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.