Logitech R500s Laser Presentation Remote With broad compatibility Spec:

Brand	Logitech
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 When 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: 65.62 ft (20 m) It may vary based on use and computing conditions.
Dimensions	Presentation remote Height: 4.87 in (123.6 mm) Width: 1.44 in (36.6 mm) Depth: 0.97 in (24.7 mm) Weight: 1.71 oz (48.4 g), included Battery (not including Receiver) Receiver Height: 0.99 in (25.0 mm) Width: 0.69 in (17.5 mm) Depth: 0.26 in (6.6 mm) Weight: 0.07 oz (2 g)
In the Box	Presentation remote USB Dongle 1 AAA Battery User documentation
Model	910-006520
Color	Gray - Black
Warranty	24 Months

Overview For Logitech R500s Laser Presentation Remote With broad compatibility 

Gray - Black