arteck hb030b universal slim portable wireless bluetooth 3.0 7-colors backlit keyboard with built in rechargeable battery, black 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>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 tablet, smartphone can easily paired and gain 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. just 0.37lb weight, makes this wireless keyboard extremely portable & the perfect travel accessory. <br>stylish design with high-grade anodized zinc alloy back shell abs plastic brushed finish 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) <br> <br> <b>note: </b> <br>1. this keyboard doesn't support the win 8 mobile. <br>2. for android 4.4 users: the caps lock indicator may not light, but will still function normally. <br>