Mini UMK‑100‑RF USB Pocket Wireless Keyboard for Windows 2000 / XP / Vista / 7 / OS 10.x Feature: Multifunctional 3-in-1 wireless keyboard (keyboard, touchpad, laser pen) is equipped with a 300 mAh battery. With 2,4G radio technology with built-in backlight, the wireless keyboard is easy to use. For a fully functional QWERTY mini keyboard, you can choose whether the touchpad will be used horizontally or vertically. A such a pocket keyboard supports Windows 2000/XP/Vista/7/OS 10.x or lower/Linux. With 69 keys, supports USB interface, the charging time of this keyboard is 3,5-4 hours. Specification: Article type: Keyboard Built-in battery model: GRP6618055 lithium battery Battery capacity: 300 mAh Interface: USB Number of keys: 69 keys Charging time: 3,5-4h Wake Up: 500-700h Support system: for Windows 2000/XP/Vista/7, For 10.x or earlier operating system: For Linux (for Debian 3.1 / Redhat 9.0 / Ubuntu 8.10 / Fedora 7.0) List of packages: 1 x Keyboard 1 x USB receiver 1 x USB charging cable 1 x User Manual