2.4G wireless/bluetooth keyboard and mouse, can switch between 4 devices at . Support desktop, , notebook, tablet, mobile phone. The roller adopts rubber non-slip design for comfortable noise reduction, easy to browse long web pages. Built-in battery, fast charging. Charge for 2 hours, enter smart power saving mode when silent. Name:Wireless Keyboard And Mouse Set Connection method:bluetooth Transmission distance:less than equal 10m (no ) Rated current:300mA Supported system:Win/Android/IOS Colour:As Shown Material:ABS Package Contents: 1 x keyboard 1 x mouse 1 x cable 1 x English instruction manual 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.