180°FOLDABLE ANGLE: With the foldable design, the fan can be adjusted to an angle of 180°. It can be used not only as a hand fan but also as a table fan. You can adjust the angle according to your needs, and then enjoy the cool wind without worry. POWER BANK FUNCTION: The battery can be used as a portable power bank. If you go on a trip or an excursion, you can use the power bank to charge your phone or laptop in an emergency. EASY TO STORE: Its foldable design allows the fan to take up less space. This makes the fan easy to carry, easy to take in a handbag. 1. The USB fan can be used as a table fan. 2. Only 4 hours of full charge, the silent fan can work for up to 16 hours. 3. Multi-function design for office, stroller, camping, bed. 4. Foldable and mobile, mini size, light weight, can be taken anywhere. 5. Brushless motor makes the fan strong and durable. 6. Rechargeable and replaceable 4000mA 18650 Li-ion battery, can be powered by USB charger, computer, power bank.