1. Material: plastic, electronic components
2. Number of keys: 4 keys
3. Working mode: Bluetooth connection
4. Bluetooth version: 5.0
5. Working distance: 10m
6. Voltage/current: 1.5V/60mA
7. Resolution: 1000-1200-1600DPI
8. Working method: photoelectric
9. Wheel direction: four-way wheel
10. Battery type: AA battery x 1(not included)
11. Ergonomic line design, fits the curve of the hand, and feels comfortable
12. Non-slip roller design, sensitive and convenient operation
13. Dimensions: 11.1 x 5.5 x 3.5 cm
14. Weight: about 90 grams