Color: red, blue, gray
Sensor technology: advanced optical tracking technology
Optical resolution: 1000dpi
Number of buttons: 3
Roller: Yes
Battery type: 1 AA battery (not included)
Wireless operation distance: about 10 meters
Wireless technology: Advanced 2.4 GHz wireless connection technology
Interface: USB receiver
Supported operating systems: for Windows Vista,Windows 7,Windows 8,Windows 10, for MAC OS X 10.5 or later, for Chrome OS
Package size: 105mm*70mm*40mm/4.13*2.75*1.57''

Please allow 1-3mm differs due to manual measurement.
Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.

Package included:

1 X Mouse
1 X USB Receiver