Ergonomic Design Mouse - The shape of this Bluetooth Mouse keeps your hand in the right ergonomic position, end of wrist and shoulder pain 1 Mouse for Multi- - Connects up to 3 devices via Bluetooth 5.0 and Bluetooth 3.0 and 2.4G wireless, for switch from the devices Noiseless Click and Voiced Click - Equipped with 9 buttons, featuring with noiseless click and voiced click left or right button to meet your different needs for working or gaming Rechargeable Mouse - With built-in rechargeable battery which means you can use this mouse without running the risk of not having a couple of batteries at hand Wide Compatibility - Bluetooth and 2.4G wireless connectivity make this mouse supports almost all Bluetooth-enabled devices or the devices with USB ports Colour:B:Black and Material:Plastic 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 picture a little different from the real thing. The measurement allowed error is 1-3cm.