The H18+ Wireless Keyboard has backlight function, which is good to play in the dark, and soft light will not hurt your eyes at night. With 56 keys and 2.4GHz wireless connection, multi-touch touchpad and innovative mouse wheel, it sets keyboard, mouse and touchpad in one, small size includes power. Put it into your bag, convenient to use anytime and anywhere.Main features: 2.4GHz mini wireless keyboard, enjoy up to 10m operating distance. Backlight function to be used in the dark and at night. High touchpad for easy and accurate manipulation, better match the different sizes of screen. With the innovative mouse button, facilitate the realization of the mouse functions. Plug and play, no need to install software, with the USB receiver at the back of the keyboardSmall and light, portable design makes it easier to be taken everywhere, meeting, speech, home entertainment, etc. perfect for devices such as PC, , , Android TV Box, smart TV, etc.Specifications: Receiver(dongle): Nano style. Connection port: With USB2.0 or aboveTransmission mode: GFSK 2.4GHz wireless, up to 10 meters. Transmission frequency : 2400-2483MHZ(16 channels) Transmission Power : Less than +4bdPower supply: Rechargeable polymer Lithium- battery Charging voltage: 4.4V-5.25V Charging current: 300mAOperating current: Less than 15mA(vibration off)Sleeping current: Less than 20uASize: 142x90x19mmSupport System: compatible USB device - Window XP, Vista,7/8/10, Linux, Android OS (With standard USB interface), OSApplicable: Home entertainment, multimedia education, training, meetings, presentations and computer remote control computer-controlled; Car TV, HTPC, big screen TV, smart TV, player, network player, X-BOXIndicators: Red : - It blink in low voltage and be on in charging status - It will be off when the battery is fully . Blue: - It keeps on when key or touchpad is pressed and be off after finger released. - It will flash when the wireless part is not work correctly. make your usb receiver has been plugged into side or you must re-pair it again. Orange (left): Means the touchpad is in keyboard mode. Orange (Right): Means the touchpad is in touch mode.Note: When the 2 orange are on at the same time means the touchpad is in gesture status. note:For power saving, the touchpad will enter into sleep mode when there is no any operation in 3 minutes or there is wirelss disnnection in 10 seconds.Material: plasticColor: as shownPackage Contents:1 x H18+ Mini keyboard1 x Receiver1 x USB CableOnly 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.