Key with backlight (backlight can be turned off),Cursor one key lock    MX3 voice backlight    2.4G wireless backlight keyboard,Free switching between infrared and 2.4G    Up to 10m distance control    Support Android, windows, Mac OS, LIlux and other operating systems.        Model: mx3-m-l    Applicable model: General    Type: backlit keyboard    Number of keys: 81    Interface: USB    Whether plug and play is supported: Yes    Connection with computer: wireless    Whether there are multimedia function keys: Yes    With or without hand support: None    Waterproof function: waterproof is not supported    Key technology: None    Backlight function: support backlight    NOTE1: This type of air mouse can't control the satellite channels.    NOTE2: Only 5 keys can be programmed.    NOTE3: This remote control is not suitable for Smart TV    If you use the Voice remote control on android tv box. Please install "google assistant"    size:173 x 53 x 18mm     Material:ABS    colour:black        Package Contents:    1 x remote control keyboard    1 x user manual        Only the above package content, other products are not included.    Note: Light shooting 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.