New design wireless laser pointer, pen remote control for teachers

Model Number: DSIT007-01 Brand Name: Doosl Key Specifications/Special Features: This wireless presenter is powered by a 300mAh lithium polymer battery and comes with a universal Micro USB port. You can easily charge it via the USB port on PC or a mobile phone charger.Specifications:Transmitter technology: radio frequencyFrequency: 2.4GHzControl distance: 100mClass 3RMax output: <5mWLaser distance: >200mWavelength: 650nmBattery: 300mAh polymer LithiumWorking voltage: 3.6V-4.2V
Sleep current: <5uA
Dimensions: 125*30*15mm
Weight: 32g

USB receiver
Operating system: Windows 2003, XP, Vista, Windows 7/8/10, Mac OS, Linux, Android
Dimensions: 18.5*14.5*6mm
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