PLUG AND PLAY: remote with mini wireless keyboard is connected by a stable powerful 2.4GHz RF technology, just plug USB receiver,the transmission distance can up to 10 meters/ 394 inch.(2.4G meaning: wireless control , no need to aim at the screen, can operate the cursor in any direction)(Note: Most //// smart TV,may not be compatible, it can be used on Firestick and via an OTG female cable.). 3-in-1 MULTIFUNCTIONAL REMOTE : Mini wireless keyboard and 4 Axis gyration motion system:only have 45 keys button,but can enter all characters in one. Press "Alt""Fn" to switch to punctuation or letters characters,allows to be controlled accurately for motion sensing,it's more convenient to operate in horizontal and vertical mode for typing. STRONG COMPATIBILITY: Support system /Android/ OS/Linux, Applicable to: Android TV Box/Mini PC/Smart TV/Projector/HTPC/ PC/TV.(Recharge for many hours and works for several weeks.Lithium battery are included ,the battery is built inside the remote,when the battery runs out, the remote can be used after charging.) AUTO SLEEP AND WAKE UP FEATURE: When the remote control for 15 seconds withot any operation,the remote control into sleep mode,blue light is off(Save Power). After the remote control ertering hibernation,press any key to wake up the remote control to enter the normal working condition. Wireless modulation mose: GFSK Modulation frequency: 2.4-2.4835GHZ Working temeperature: -20Celsius~65Celsius Battery type: 300mah, 3.7 V lithium battery Overall power consumption: less than 9mA Standby power consumption:less than 25uA Key number: 57keys Charging port: micro-USB Weight: about 86.5g / 3.06 oz Support system: /Android/ OS/Linux Applicable to: Android TV Box/Mini PC/Projector/HTPC/ PC Colour:black Material:plastic Package Contents: 1 x Air Remote 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.