Brand ABCNOVEL Model A171 Wireless 2.4G Power Supply 1 x AAA battery (included) Distance 15 M Laser Pointer Supported Red laser pointer Color Black Supports System Windows 2000 / XP / Vista / 7 Features Adopts USB and RF technology integrated computer and laser pointer function; Great for products presentation teaching and academic conference; Control distance: more than 15 meters allowing you to control your computer at each corner of the room; Laser distance: 200 meters Packing List 1 x Presenter 1 x AAA battery 1 x Carrying pouch 1 x English user manual