Wireless Mouse Pen with Stylus Fuction, Lcyyo 2.4GHZ USB Dightal Optical Pen Mouse, Handwriting Ergonomic Mice for PC Laptop Notebook Computer Mac Adjustable 800/1200/1600 DPI (Grey);

Innovative mini pen-style mouse 
With handwriting input function, you can use it as a writing board for your tablet, laptop, desktop at will.

A best tool for conference and multimedia teaching 
● Equal to PowerPoint presenter when needed, use mouse wheel to turn pages freely, presenting ppt at business meeting or assisting multimedia teaching. Remote control distance range is up to 10 meters so you can free to move around the room and interact with your audience.
● Widely used on PPT, hand writing, drawing, metting.

Low voltage alarm
When the alarm lights up, remind you to change battery in time, in case of stopping normal use.

Ergonomically Design, best mouse for who suffered from "mouse pain"
● This mouse unlike standard mouse, it like a pen you can handle,more comfortable.
● Now, using this mouse all of your wrist pain will be gone away! It takes some adjustment to get used to, but this mouse is AWESOME for those trying to find a more ergonomic life.

The wireless mouse don't work or worked for about few hours and than stopped working, how to do it?
1. Check if the switch has been open.
2. Make sure the battery installed correctly.
3. Check USB port or receiver if well connected, pls make sure it well connected.
4. Try to use other computers.
5. Try to change a new brand battery.
6. Re-connect the receiver and re-open the battery, done continuously.

Specifications: 
* Resolution adjustable: 800/1200/1600
* Operation frequency: 2.402GHz-2.480GHz
* Operating voltage: 3V 
* Operating current: 15mA 
* Tracking method: Optical technology 
* Effective Distance: 33ft 
* Battery type: 1*AAA Battery (not included)