1. Battery capacity: 2000/4500mAh
2. Charging time: 2000mAh: about 2-3h; 4500mAh: about 4h
3. Use time: 2000mAh: about 2-7h; 4500mAh: about 4.5-16h
4. Wind speed: 3 speeds 4.0m/s
5. Charging port: Type-C
6. Input: 5V 2A
7. Output: 5V 1A
8. Power: about 4W
9. Packing list: fan x 1, charging cable x 1, lanyard x 1, manual x 1
10. Size: about 15.2 x 6.2 x 4.7cm
11. Weight: 2000mAh: about 120g; 4500mAh: about 148g

Features:
1. Multi-stage pressurized air guide system, small body releases large air volume
2. Airflow jet expansion, wind surface greatly increased
3. 3 wind modes can be adjusted to meet different needs
4. Built-in noise reduction and shock absorption technology, 35dB light sound operation
5. Type-C fast charging, built-in high-voltage protection chip, to prevent the cell phone high-voltage charger to break the battery
6. Minimalist design, soft arc, rounded and comfortable
7. Attentive lanyard hole, can be tied with a lanyard, carry more convenient
8. Wedge-shaped 7-feather fan blades, strong wind power, doubling the coolness