More Information Product Type Presenter Availability Model R400 Connectivity USB, Wireless Other Detail Laser Class: Class 2 Laser Max Output: Less than 1mW Wave Length: 640～660nm (red light) Battery type: 2 AAA batteries Battery life (Laser pointer): 20-hour maximum Battery life (Presenter): 1050-hour maximum Wireless operating distance: Approx 10m Wireless technology: 2.4 GHz wireless technology Dimensions 37.8 x 115.5 x 27.4 mm Weight 57 g Manufacturer Link Additional Information Warranty Check Color Black
