Shell material: ABS. Noise: 45-50dB (inclusive). Motor type: Brushless motor. Whether built-in battery: built-in battery. Battery capacity: 5000mAh. Power mode: USB. Wind speed gear: 3 gears. Combination form: single piece. Color: dark blue, white. Size: 19*16.2*5cm/7.48*6.38*1.97inch.