Product Name: wireless mouse with presenter ,   track ball , Forward, Backward, Play/Pause, Blackscreen, red laser pointer 
Model Number: UT-P328 

Specification: 

Working Principle: 2.4G Hz RF wireless remote control
Connector: USB dongle
ID/CHs: 256ID ID0—ID256,4CHs
Distance: 10 M
Button: Mouse: 4 key, trackball
Powerpoint: 4 key, Forward, Backward, Play/Pause, Blackscreen
Laser Pointer: Red laser pointing
Battery: 2xAAA rechargeable battery
Power consumption: 3.0DC, 10mA
Charge cable: USB min pin cable
Switch/MTBF: 70+_10 gf / up to 1kk times
Dimension (W*H*L): 47.5*36.2*98.8 mm
OS supported: VISTA, XP, ME, 2000, 98