1. Battery capacity: 4500mAh
2. Use time: about 3.5-21.5h
3. Charging port: Type-C
4. Wind speed: 4 speeds
5. Size: about 18.25 x 21.8 x 7cm
6. Weight: about 279g

Features:
1. Pressurized air chamber to reduce noise and increase airflow from the air ducts
2. neck diamond pattern silicone pad design, reduce the contact area and moisture and sweat adhesion
3. Circulating airflow gain technology, so that the back of the neck is full of cool air
4. Metal infinite pivot, adjustable by damping the pivot suspension, suitable for different neck circumference
5. Type-C port fast charging, built-in high-voltage protection chip, to prevent cell phone high-voltage chargers to break the battery
6. Non-destructive air ducts, straight-through air ducts, high air output
7. Skin-friendly material, delicate and comfortable