Main Features:
Product Size: 98.1mm * 56.0mm * 34.4mm
Product Type: WSB01TM 
Product Color: Black 
Receiving distance: 10m 
Connection: RF 2.4 GHz 
Work: Opto-electronic 
Number of keys: 4 
The cover is a crystal UV coating 
Backward Key Browser Backward Navigation Support (Windows only available) 

Applicable to Windows 7/8/10, Mac OS X 10.8 or later, Chrome OS

Package Contents:
1 x Original Xiaomi Mouse
1 x USB Receiver
1 x AAA batteries