Logitech R800 Laser Presentation Remote (Black) 910-004658

Laser Class: Class 2 laser
Max output: Less than 1m W
Wave Length: 522～542 nm (green light)
Battery type: 2 AAA batteries
Battery life (Laser pointer): 20-hour maximum
Battery life (Presenter): 1050-hour maximum
Connectivity: Wireless technology: 2.4 GHz wireless technology
Operating distance: Approximately 98.43 ft (30m)
Dimensions: 134 mm x 38 mm x 28 mm
Weight: 71 g