arteck hb220b universal backlit 7-colors & adjustable brightness multi-device slim portable wireless bluetooth 3.0 keyboard for ios, android, windows tablet pc smartphone built in rechargeable battery arteck <b>let there be light</b><br> elegant blue led backlight with 2 adjustable brightness level, 7 different colors(deep blue, soft blue, bright green, soft green, red, purple, cyan) making typing that much more enjoyable and awesome to look at. backlight will auto turn off when idle to conserve power for when it is most needed. <br><br><b>switch between 3 devices with a single clicking</b><br>this keyboard is able to connect to 3 devices at the same time. after you pair the keyboard with 3 devices, you can simply switch the keyboard to type on any of the device with a single key clicking.<br><br><b>cross platform compatible</b><br> fully functional to all four major operating system: ios / android / macos / windows, and features system-specific function keys for each operating systems. any bluetooth supported devices such as laptop, computer, tablet, smartphone can easily be paired and gained quick access to common functions, such as volume level, playback control, copy paste text, and more.<br><br> <b>comfortable, quiet typing</b><br> the whisper-quiet, low-profile keys bring a whole new level of comfort to your fingertips. what's more, keep all your most-used functions and media controls closer than ever windows-dedicated hot keys. <br>keyboard with scissors kick construction can be used more than 3 million times continuously. <br><br><b>portable keyboard with zinc body</b><br> sleek, ultra-slim design makes for easy portability. compact size (271*150*6mm) and light weight (272g), makes this wireless keyboard extremely portable & the perfect travel accessory. <br>stylish design with high-grade anodized zinc alloy back shell abs plastic front panel. <br><br><b>rechargeable battery </b><br>built-in industry-high rechargeable li-polymer battery provides 6-month use on a single charge. (based on 2 hours non-stop use per day and backlit off)