Specification:
UPC747100665325 grey
1. Ergonomic design: fits comfortably on your hand
2. Compact and light: perfect for laptop users
3. Create professional designs
4. Extremely simple and natural to use
5. Type: 2.4G wireless touch screen pen mouse
6. Operating range: >10m (360 degrees)
7. RF frequency: 2.402-2.480GHz
8. Resolutions adjustable: 600/ 800/1200dpi
9. Operating current: 15mA
10. Battery configuration: 1.5V AAA battery*1(not include) 
11. System requirements: Windows 7/ 8/Vista/ XP/ 2000, Android, Linux, Mac OS.
12. Size: 14cm*2cm*1.5cm