Parameter Name Basic Parameters Basic Parameters Battery Capacity 4000mAh/14.8Wh USB Output 5V/2A Charging Time (2A) 2h40min ±30 min Fan Functions Speed Settings 6 Speed Settings Run Time (±30 min) 4.5h (Max. Airflow) / 16h (Min. Airflow) Max. Speed 3900±100R/min Max. Airflow 3.5m/s Max. Noise Level <62dB Packaging Specifications Product Dimensions L220×W100×H45mm Net Weight 205g Package Dimensions L140×W103×H72mm Accessories USB-C Charging Cable (300mm), User Manual, Wrist Strap