Generic-2.4GHz Wireless USB Powerpoint Presentation PPT Flip Pen Pointer Clicker Presenter with Built-in Reciver Red Light Remote Control for Teacher Lecturer Professor Scholar

Specifications:
--Transmitter
Material: Plastic
Radio Frequency: 2.4GHz-2.483GHz
Power Supply: 2 * AAA Battery(not included)
Effective Control Distance: Approx. 15m / 59in
Output Power: <5mW
Current: 30mA(Max)
Item Size: 11 * 4 * 2.5cm / 4.3 * 1.6 * 1in
Item Weight: 37g / 1.3oz

--Receiver
Radio Frequency: 2.4GHz-2.483GHz
Interface: USB 1.1/2.0

Package List:
1 * Transmitter
1 * USB Receiver(Built-in)