Our 4-speed cooling fan, with built-in 7,200mAh rechargeable battery, allows for about 5 hours for full-charged, ensuring working 3-24 hours. Come with USB output port, can be worked as an emergency power bank for your digital devices. Its adjustable height and 180° tilting angle give you a desired wind direction and height to be as a desk fan or floor fan for your personal need. It is easy to fold up for convenient storage and taking out for outdoor using. 30-45dB Low noise provides you a good cooling lunch break and sweet sleep at night.Features: 24Hrs All Day Standby & USB Charging: Built-in 7200mAh large rechargeable battery allows for about 5 hours for full-charged, ensuring working 3-24 hours (working time depends on 4 different speeds). Come with USB output port, can be work as an emergency power bank for your digital devices. Enough to satisfy your needs for a few days trip.Height & Angles Adjustable: With adjustable height from 14.2in to 39in and with 180° tilting angle, just adjust the fan head to your desired wind direction and adjust the height to be as a desk fan or floor fan for your personal need.4 Desirable Speeds: With 4-speed setting on the fan base: soft wind/ medium wind/strong wind/natural wind mode, you can adjust the 4 fan speeds in various kinds of occasions to meet your different needs.Portable & Easy Storage: No assembly is required. Standing and desk fan is easy to fold up for convenient storage. You can bring this fan to any place you want for outdoor using, take it to camping, summer fireworks festivals, watching sports, and anywhere need cool wind.Super Quiet Fan: The quiet fan is about 30-45dB in noise, much quieter than other fans, allowing you to have a super quiet environment during the lunch break and sleep at night.