Brand ipazzport Model KP-810-19 Quantity 1 Color Black Material Plastic Key Numbers 84 Connection Method 2.4G Wireless Power Supply 2 x AAA batteries (included) Supports System Android PC OS - Mac OS / IOS - Linux (Debian-3.1 Redhat-9.0 Ubuntu-8.10 Fedora-7.0tested) - Windows 2000 / XP / Vista / CE / Windows Mobile / Win 7 Other Features Tracking Method: Optical; Resolution: 1000dpi; Operating distance: 10 meters; Backlighting: Makes text entry effortless even in low light conditions; Plug and play: no need to install software Packing List 1 x Keyboard 1 x USB receiver 1 x USB cable (95cm) 1 x English user manual 2 x AAA Batteries