1. Material: ABS+PP+ electronic components
2. Noise: 36dB or less
3. Features: silent operation, long-lasting battery life, 3-speed speed regulation, natural wind simulation, colorful night light
4. Size: about 25x11.5x4.5cm
5. Battery capacity: 500mah
6. Power mode: USB/built-in lithium battery
7. Battery voltage: 3.7v
8. Charging time: 2-4 hours
