Feature: 

 optical technology

Streamline style design, less grip fatigue

Freely 360 degree use

Auto powers save and sleep function

Zoom in and zoom out function

All colors are available

High resolution up to 1600 DPI

Working on any surface except glass and mirror

Compatible with Widows system 

Specification:

Dimensions:97*55*34mm

Receiver: usb

Weight: g +/-20g
Channel: 1 channel
ID: 65535 sets
Radio frequency: Optical

Key life:5,000,000 times 
Key number: 6 keys