Features:● Built in rechargeable battery， no need to buy battery
● Ergonomic design， remit and prevent carpal tunnel syndrome
● Portable and wireless design， convenient to carry and use
● Optical technology for precise control
● Plug and play， easy to use

Specifications:
● Resolution: 2400DPI， higher DPI， higher accuracy
● Button: 4 buttons and 1 wheel ( middle button )
● Maximum operating range: 10m
● Charging cable length: 50.5cm
● Charging time: 2 hours
● Material: Plastic
Hand Orientation: Right
Interface Type: USB
Number of Buttons: 4
Number of Rollers: 1
Optical Resolution: 2400 DPI
Power Type: Rechargeable
Type: IR Wireless Package weight: 0.176 kg
Product Size(L x W x H): 10.00 x 7.00 x 8.00 cm / 3.94 x 2.76 x 3.15 inches
Package Size(L x W x H): 9.50 x 8.00 x 9.00 cm / 3.74 x 3.15 x 3.54 inches Package Contents: 1 x Mouse， 1 x Receiver， 1 x Charging Cable