RF 2.4GHz USB Wireless Presenter with LCD Timer and Laser Pointer (2400~2483Mhz)
2.4GHz digital radio frequency wireless transmission (2400MHz ~ 2483MHz) - USB 2.0 interface - Compact USB receiver included - Wireless range: up to 20 meters (manufacturer rated) - Built-in 640nm red laser pointer - Presenter powered by 2 x AAA batteries - Buttons: prev (up) next (down) play exit black screen timer mode laser switch