Logitech R500s Laser Presentation Remote (Graphite) – 20m/65ft

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)
Technical Specifications
Laser
Class: 1 laser
Max output: less than .039 mW
Wavelength: 640-660 nm (red light)