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 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.   Medium vs Large Fan: Height : 8.46" VS 39.37". Battery : 1200mAh VS 7200mAh. Capacity : 3.5 Hours VS 24 Hours. Speed : 3 Speeds VS 4 Speeds. WHAT YOU GET : 1 x Portable Folding Fan (Choose Size). 1 x USB Charging Cable. 1 x User Manual.