Housing material: ABS Gears: 2 speeds Rotation speed: 7000 in first gear, 8000 in second gear. Battery capacity: 800mA Charging time: about 1.5 hours Endurance: about 8 hours Charging method: charging and plugging Sound decibel: approx. 50db Wheel type: Interchangeable wheel head 2 speeds, up to 8000RPM/min, improve the efficiency of sharpening machine claws 3 nail sanding ports, suitable for different sizes of pets. Built-in 2000mAh large capacity battery, a full charge can be used for 8 hours. USB charging cable, can be connected to laptop, power adapter or mobile power for easy charging. Ultra-low noise level to keep pets calm and to help polish claws faster and easier.