?After-sales service?This compressed air duster allows more than 5,000 times of use, You can save money rather than buy the compressed air cans ever again, We offer 1 year warranty from the purchase date. Please feel free to contact us through if you are not happy with the purchase or encountered any problems. Rechargeable Electric Air Duster?The electric air duster is equipped with fast charging port, can be quickly charged in three hours, which can run continuously for15- 30 minutes. The use time depends on the blowing force. You can charge it through the car charger, mobile power laptop. ?Cordless Air Duster?The cordless air duster only 3.3*2*7 inch ,Easy to carry when going out. Provide two nozzles for this electric air duster. The slender nozzle is suitable for cleaning corners or places beyond the reach of hands like computer cases, the brush nozzle is suitable for rugged surface dusting like electronic keyboards. Dual smart start mode?Long press the power button to start working until you release the power button; double press the power button to work continuously until you press the power button again.The indicator light is on when starting work.The air duster is structured with an extended full-palm gripping design to let users grip it at their comfort. ?Powerful Deep Cleaning? The wind power of the Cordless air duster can reach 33000RPM , Can produce super-strong airflow, Blowing force 0.98-1.16OZ . It is a substitute for compressed air and can be recharged and used repeatedly. It is more energy-efficient and environmentally than constantly buying canned air. For cleaning computers, camera lenses, Sofas, electronic equipment, medical equipment, etc.