1. The motor runs quietly, low noise 2. 3 levels of wind adjustment, indoor and outdoor on-demand adjustment 3. The bracket is detachable, hand-held, desktop, portable 4. Large capacity battery, strong battery life 5. Long press the power button to turn on the colorful breathing light 6. Support USB charging cable power supply 7. Encrypted fan fence for safety protection 8. With lanyard hole, you can hang your neck 9. Support phone horizontal/vertical placement 10. Power: 2W 11. Battery voltage: 3.7V 12. Battery capacity: 400mah 13. Wind speed: three-speed speed regulation 14. Dimensions: 8.5 x 9.8 x 11.6 cm