Specifications:
Color: red, blue, grey (optional)
Type: 1# (without adapters), 2# (with two adapters) (optional)
3-resolution adjustable: 800/1200/1600dpi
Supportive system: compatible with Windows 7/Vista/XP/2000, Android, Linux, Mac OS
Operating frequency: 2.402GHz~2.480GHz
Channel: 16 with automatic frequency hopping
Rated operational voltage: 3V
Rated operaional t: 15mA
method: optical technology
Maximum acceleration: 14in/s
Power supply: 1 * AAA-battery (not included)
Item size: 140 * 20 * 15mm / 5.51 * 0.79 * 0.59in
Item weight: 29g / 1.02ounces
Package size: 165 * 45 * 43mm / 6.5 * 1.77 * 1.69in
Package weight: 45g / 1.59in

Note:
1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures.
2.Please allow a little measuring deviation due to manual measurement.

Package List:
1 * Mouse Pen
1 * Holding Base
2 * Adapters
1 * User Manual