1. New upgraded power display, no need to worry about battery life: press the battery display button to check the battery UAI drawing amount, no need to worry about battery life 4. Charging display, full charge, red light: the bottom lights up when not full, red light lights up when fully , power off when the battery is full to protect the battery 3. 8000mAh lithium battery: dual battery 4000mAh*2 design, stable voltage output, good tools must have long battery life 2. Built-in magnetic for the nozzle: stable adsorption without falling off, reducing weight and reducing wind resistance 5. One-button , stepless speed change: long press the switch to , speed adjustment, one-hand control, Manufacturer: Akfldms