Specifications:

2.4GHz Wireless optical mouse Cordless Scroll Computer PC Mice with USB Dongle 
wireless mouse
2.4G Mouse Optical Mice.
For Computer PC .
10m distance. 
High speed: 800dpi to 1600dpi, use the small 'DPI' button to switch the speed between 800dpi and 1600dpi.
Features:
Slim USB Wireless 2.4G Mouse Optical Mice for Computer PC
This Wireless Mouse is a good choice for you: 10m Wireless Operation Distance,
Ergonomic Design, High Accuracy, High Quality, Modern Design....
2.4GHz wireless transmission up to 10 meters operating distance.
No need driver, plug-and play.
Ergonomically designed, comfortable to use.
Automatic Power off (APO)
Intelligent Power Saving (IPS)
Powered by 2 x AAA Alkaline battery. (battery NOT included)

This is a smart Mouse it turns it self OFF.

Intelligent power saving management. Low power consumption.
Nano USB Dongle.
Ultra slim, compact and lightweight, easy to carry.
Decent and modern design.
Ideal laptop and desktop companion for home and office use.