Deskripsi: Logitech R500s Laser Presentation Remote R500s Dimensions Presentation remote Height: 123.6 mm Width: 36.6 mm Depth: 24.7 mm Weight: 48.4 g, included Battery (not including Receiver) Receiver Height: 6.6 mm Width: 17.5 mm Depth: 25.0 mm Weight: 2 g Technical Specifications Laser Class: 1 laser Max output: less than .039 mW Wavelength: 640-660 nm (red light) Battery Battery: 12 months + 1 extra week without laser pointer 1When your battery is low, the R500s goes into a 'power-saving' mode disabling the laser to extend battery life so you can continue presenting for an extra week. Battery life may vary based on use and computing conditions. Indicator Lights (LED): Battery and Connectivity LED Connectivity Connection Type: Bluetooth low energy technology and 2.4GHz wireless connection Wireless range: 20 m 2