Portable Hanging Neck Fan USB Charging Long Life Outdoor Small Fan 1. Material: ABS + electronic components 2. Noise: 45-50dB 3. Wind speed gear: 3 gears 4. Duration: 3-6h 5. Charging interface: Type-C 6. Battery capacity: 500mAh 7. Weight: about 300 g 8. Size: about 27.5 x 17.9 x 4.8 cm Features: 1. 360-degree rotation, universal hose, arbitrary adjustment of the wind angle 2. One button operation, three wind speeds, no wearing sensation, multi-channel wind chamber, airflow multiplier 3. Double turbine powerful power, leafless design without hair, no feeling comfortable to wear, USB charging interface, long-lasting battery life 4. Enjoy the summer quietly, cool and do not disturb, the use of ultra-quiet motor for power, quiet work and study without noise 5. Long-lasting battery life, built-in 500mAh lithium battery, charging, the indicator light will be often on when full, the indicator light will be off, charging safe and reliable