<p>Duration of use: 3600MAH shaking head battery life: 6H in first gear, 4.5H in third gear, 3.5H in third gear, 2.5H in fourth gear</p><p>Charging time: 3600MAH charging time 4.5H</p><p>Speed: 1st gear: 1300 2nd gear: 1500 3rd gear: 1700 4th gear: 1900</p><p>Input/output voltage: 5V--1A</p><p>Rated voltage: 5v</p><p>Rated power: 4w</p><p>Wind speed gear: 4th gear</p><p>Power supply mode: USB</p><p>Noise: 36dB (inclusive) or less</p><p>Built-in battery capacity: 3600 mAh/7200 mAh</p><p>Battery life: 6-8h (inclusive)</p><p>Motor type: Brushless motor</p><p>Whether to support charging: Yes</p><p>Additional functions: Shake your head left and right, smart clock, mute, 4-speed switching</p><p>Whether there is a built-in battery: Built-in battery</p><p>Operation mode: normal button</p><p>Way of shaking your head: shake your head left and right</p><p>Color: DF11-A green, DF11-A white</p>