Features: A plug-and-play wireless receiver, there's no software to install No hassle setup, simply plug into your computer's USB port Buttons having quick access to different functions are easy to find by touch.
Transmitter Features:
Switch: Button
Material: ABS
Light Style: Beam light
Laser Color: Red
Radio Frequency: 2.4GH z
Laser Output Power: <5mw Battery Power: 1 Pcs 1.5v AAA Battery (not Included) Laser Distance: > 100m
Laser Wavelength: 650nm
Size: 130x90x40mm/ 5.1 x 3.5 x 1.6 inch (Approx. ) Enjoy 2 year warranty, 90 days return and refund!! You deserve it.