What's in the box:

YWYT G850 2.4GHz Wireless Mouse 2400DPI Optical Mouse Rechargeable Mute Office Mouse Ergonomic Mouse for PC Laptop (Standard)

Features:
2.4G wireless transmission, 10m transmission range, fast and convenient to use.
1200/1600/2400DPI switchable, sensitive response, smooth operation, accurate position.
Ergonomic design, fit the palm, comfortable feel, not easy to feel tired after long time using.
USB connection, no driver required, plug and play. The USB receiver can be placed behind the mouse for easy portability.
Slim and lightweight design, easy to carry and use.
Mute design, not disturb others.
Built-in rechargeable lithium battery, fast charging, no need to replace the battery.
Wide compatibility, compatible with desktop computer, laptop, suitable for home, office and gaming use.

Specification:
Model: G850
Color: Black
Material: ABS
Connection: Wireless
Wireless transmission frequency: 2.4GHz
Wireless transmission distance: Up to 10m
DPI: 1200/1600/2400DPI
Battery capacity: 600mAh
Charging time: 2-3 hours
Switch life: 8 million times
Voltage/current: 3.7V/20mA
Operating system: Windows XP/Vista/Windows 2000/ME/Win7/Win8/Mac OS or latest version
Item size: 10.3 * 6.7 * 3.5cm /4.06 * 2.64 * 1.38in(L * W * H)
Item weight: Approx. 57.1g /2.01oz
Package size: 12 * 9.5 * 6.8cm /4.72 * 3.74 * 2.68in(L * W * H)
Package weight: 120g /4.23oz

Packing list:
1 * Wireless mouse
1 * USB receiver
1 * Charging cable