1. Material: ABS 2. Resolution: 1200DPI 3. Transmission frequency: 2.4GHz 4. Number of buttons: 3 5. Battery: AAA battery x 2 (delivery without battery) 6. Dimensions: 11.7 x 6 x 4.3 cm 7. Weight: 120g/piece 8. Four colors, you can choose according to your preferences 9. Wireless receiver, can receive within ten meters 10. The body adopts UV treatment, mirror effect 11. The roller adopts soft rubber design, anti-skid and sweat-proof 12. High-performance left and right buttons, good operation feel 13. The design of the wheel can turn, does not affect the use
