პრეზენტერი მაუსით DOOSL Wireless Presenter Air Mouse Powerpoint Clicker Presentation RF 2.4GHz Remote Control Pen for Projector DSIT014B

Transmitter 
Technology: Radio Frequency 
Frequency: 2.4GHz 
Control Distance: 100m 
Max Output: <1mW
Laser Distance: >200m 
Wavelength: 650nm 
Battery: 300mAh polymer Lithium
Working Voltage: 3.6V~4.2V
Sleep Current:<5uA
Dimension: 120*33*10mm 
Weight: 30g 
 
USB Receiver 
Operation System: Windows 2003, XP, Vista, Windows 7/8/10, Mac OS, Linux ,Andorid
Dimension: 21*14.8*7.2mm 
Weight: 2g 
 
Safety Warning: 
Be warned that 2.4GHz pointers are not toys; they should never under any circumstances be directed into people's eyes or at passing aircraft. 
The pointer is not a toy and should not to be used by anyone under 21 
It is illegal to direct the beam at any flying objects, moving vehicles and any public or private structures 
A pointer should not be directed at people or animals 
A pointer can be dangerous if not used properly