[ Plug and Play ] - Mini-receiver, No need to install drivers,saving computer USB space, integrated design, easy to carry. Low battery intelligent reminder, when the battery is too low, the blue indicator light flashes to remind you to charge in time Built-in 200mAh large capacity lithium battery, which can be fully charged in 1.5 hours Surface ergonomic design, comfortable grip, frosted texture, raised physical button design, can operate freely without looking down, and the presentation is smoother The USB receiver is compatible with USB1.0, USB2.0, USB3.0, just plug in and operate Colour:black Material:ABS Size: 13 x 2 x 1.3cm Package Contents: 1 * Wireless Presenter Only the above package content, other products are not included. Note: Light 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.