It is compatible with Windows 98/ME/2000/2003/XP/VISTA/Win7, Linux, and Mac OS. Maximum output: 5mW. USB interface receiver. Red laser pointer: visible in most environments. Usable distance up to 15 meters, allowing freedom of movement in the room and interaction with the ence. LCD battery power indicator displays remaining power; on/off switch helps extend battery life. Intuitive slide control button for easy navigation through presentation materials. One-touch button design with smooth exterior finish for comfortable handling. Specifications: Model: R700 Interface: USB Connectivity: Wireless Laser Power: 5mW Power Source: 2 x AAA batteries (not included) Laser Color: Red Material: Plastic Size: 13.5 x 3.8 cm / 5.27 x 1.48 inches (approx) Package Included: 1 x Red Laser Pointer 1 x USB Receiver 1 x Storage Bag 1 x English User Manual