Battery Capacity: 2500mAh Working Voltage: 7.4V Charging Time: 3.5h Theoretical Usage Time: 4h (Level 1) Product Weight: 218g High Rotation Speed: 110,000 RPM (120W High-Speed Motor) Speed Control: - Level 1: 25,000 RPM - Level 2: 60,000 RPM - Level 3: 110,000 RPM Wind Speed: - Level 1: 11 m/s - Level 2: 30 m/s - Level 3: 45+ m/s Packing Quantity: 50 PCS Weight: 18.2 KG Dimensions: 59.5 × 34.6 × 23.2 cm