Lenovo M21 Wireless Mouse Mute Button One-Button Service Portable USB Optical Mice For Computer Laptop Office Home
2.4G wireless transmission
Soft rubber roller
Non-slip foot pad
1000DPI Optical engine
Item name: Lenovo M21 Wireless Mouse
Working voltage: DC 1.5V
Working current: 8mA
Button number: 4
Button elasticity: 70±10g
Connection: 2.4G wireless transmission
Product size: 103.5 * 71 * 38mm
There is a little of difference according to manual measurement.
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.