Home Handheld Wireless Dust Collector Computer Keyboard Blower

Material: ABS+PCVoltage/Power: 5V2ABattery capacity: 7500mAh (3*2500mAh)3 different powers: 50w, 70w, 90w3 different working hours: 30 minutes, 20 minutes, 15 minutesMotor speed: 50,000rpm, 70,000rpm, 90,000rpmMotor: brushless motorCharging time: 3-4 hoursDust blower...