Xiaomi Mijia ZMYDFS01DM Desktop Fan 4000mAhBrand: XiaomiModel: ZMYDFS01DMIt is suitable for office, outdoor leisure and home daily use.18.5 hours of long endurance, 4000mAh battery (18.5 hours of continuous use in the first gear of wind speed)Light tone and low noise, as low as 34dB.Brushless DC mot..