Ultra-high-speed 200,000 RPM compressed air duster, perfect for cleaning small areas. Used only a couple of times, but sometimes the battery doesn't charge to 100%. Operation is not affected. ■ Product Specifications Size (approx.): 15.6 x 4.8 x 3 cm Weight (approx.): 315g Battery Capacity: 8000mAh Charging Time (approx.): 3 hours Operating Time (approx.): (Low) 1 hour / (Medium) 35 minutes / (High) 25 minutes / (Turbo) 10 minutes Rotation Speed: 200000RPM Airflow Speed: 101m/s Set Contents: Main unit, USB Type-C charging cable, cleaning brush