INFINITER LR6 Wireless Remote/Presenter/Media Player with Green Laser Pointer for Meeting Room It can transmit laser beams on an LCD screen or a wall projection TV with Green Laser. Output power: Class IIIa, output power is less than 5mW, eye safe laser product. Wireless USB Transceiver with Micro SD Card slot. It's big enough to find out, so you can put in the meeting room. Remote keyboard & mouse and Multimedia Remote. It integrates the RF wireless remote control technology (unidirectional, directional alignment not required)), remote control distance up to 10~15 meters). Power saving mode: the LR6 will automatically turn off after 30 minute standby. Power Saving Mode -will turn off automatically after 30 minutes standby. The receiver can be integrated with the main control unit for storage and carriage. No extra software required (compatible with Windows 8, Windows 7, Vista, XP, etc. systems). Powered by 2 AAA batteries (Included!) the unit can work 6 hours.