Specification:
Color: black, white, blue
Working type: optical
Optical resolution: 1000dpi
Number of buttons: 3
Connection mode: wireless
Mouse interface: USB
Receiving range: 10m
Number of keys: 3
Key: Mute
Battery type: 1 AA battery (not included)
Maximum resolution: 1000dpi
Transmission frequency: 2.4GHz
Support: for windows10 / 8 / 7, forMAC, for Chrome OS, Linux
Package size: 105mm*70mm*40mm/4.13*2.75*1.57''

Note:
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.