1. 4 Speed load display
2. 3 gear speed, ergonomics, overload protection
3. Strengthen the motor, powerful enough to meet all kinds of work needs, three-speed no-load operation for more than 1 hour. If you need to use it for a long time, you can use it while charging
4. Lightning-fast charge
5. Temperature control protection / Overpressure protection / Overcurrent protection / Charge and discharge protection
6. Lightweight, easy to operate, easy to cope with various tasks