【3 adjustable speed levels】 : Low / medium / high speed levels. Press the power button to adjust the appropriate fan speed. Long press the button to turn on the light. No matter where you go, you can relax 【Rechargeable and long-lasting battery】 :Built-in 500mAh lithium battery fan, rechargeable and USB powered. Operating time: 160 minutes for the first gear, 70 minutes for the second and 50 minutes for the third. A USB fan with strong airflow can quickly and easily achieve a cool feeling. 【Portable】 The charging fan is small and powerful, suitable for different positions. When you go out, the fan can be put in your pocket or hung with a lanyard, taking up a little space. Unique portable design, suitable for outdoor and indoor sports, such as football, travel, camping, hiking, fishing, office, home, school, etc. 【Stable and quiet】The USB fan has good heat dissipation and low noise. The USB fan produces a comfortable wind, which is 30% quieter than ordinary fans and has low noise and will not interfere with work or rest. It can provide you with a cool and peaceful environment. Product Parameter: Battery capacity: 500mAh Charging time: about 1 hour Product size: 61 * 31*115mm Product material: ABS / PP / electronic components Use time: 1 gear 160min ; 2nd step 70 min; 3 on foot 50 min Standard: 1 fan, , 1 USB line Features: 1. The micro USB port can input 5∨ for power supply: ①When the 5V power supply is connected and the fan is on, the fan will have priority to supply power. power and the remaining battery will be charged ②When an external 5V power supply is connected and the fan is not turned on, charge the battery with a maximum current of 1A 2. The two-color red light is always on when charging, and the two-color blue light is always on when fully charged 3. Press the button to adjust the position of the fan, short press once to increase one speed, when it reaches the third speed, short press the button again to turn off the fan 4. Long press the button to turn on the colorful light, the colorful light changes gradually, and long press the button to turn off the colorful light.