Product: R400 Laser Presentation Remote, Features: For basic slide navigation, easy-to-find buttons by touch, smooth contours for comfort in hand, Weight: 2.01 oz (57 g), Receiver Weight: 0.21 oz (6 g), Laser Class: Class 2 laser, Max Output: Less than 1 mW, Wavelength: 640–660 nm (red light), Battery Type: 2 AAA batteries, Battery Life (Laser Pointer): 20-hour maximum, Battery Life (Presenter): 1050-hour maximum, Wireless Technology: 2.4 GHz wireless technology, Operating Distance: Approx. 32.81 ft (10 m) (may vary based on use and computing conditions).
