Color: BlackProduct size: 146.8*97.5*19mmType: Keyboards & KeypadsReceiver (dongle): Nano StyleConnection port : With USB2.0 aboveTransmission mode: GFSK 2.4GHz wireless， up to 10 metersTransmission Power: Less than +4dbPower supply: Rechargeable polymer Lithium-ion battery (Included)Charging voltage: 4.4V ~ 5.25VCharging current: 300mASleeping current class1: 30uAOperation voltage: 3.7VOperating current: <15mASystem RequirementsHID compatible deviceTerminal with USB portWindows 2000Windows XPWindows Vista， Windows CE， Windows 7， Windows 8Linux (Debian-3.1， Redhat-9.0， Ubuntu-8.10， Fedora-7.0 tested)Android OS (With standard USB interface)Auto Sleep and Wake-up featureThe keyboard supports auto sleep and wake-up. Without operation around 3 minutes， the keyboard will enter sleep mode. In sleep status， all LED indicators are off. Pressing any key can wake it up.Enabling the backlight (Optional)The backlight led will automatically turn on for three seconds after having pressed the power switch to the on position. If enabling backlight function， the backlight led will light for one minute. In this minute， if having no key is pressed， the backlight led will turn off. After backlight led turned off， the backlight led will turn on again if you press any key again. Enable/disable the backlight led through pressing FN + esc.It's fashionable， retro， creative， is a very useful accessory brighten up your look， also as a gift.Note: Due to the difference between different monitors， the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. Thank you!Package Content: 1 x Keyboard touchpad Combo; 1 x USB Wireless Receiver; 1 x User Manual; 1 x USB Charging Cable