Super long endurance and updated powerful airflow： Adopted advanced technology, it lasts 46 hours on speed 1, 35 hours on speed 2, 13 hours on speed 3 after about 3-4 hours full charge. Foldable design and mini size：Foldable design makes it easy to carry and store. Moreover, with capsule shape (5.1*1.65*1.65inch, weight: 6.38 OZ), this rechargeable fan can hide the fan blade, small and easy to slip into your pocket and purse. Power bank function and silent operation：The port of 5V/1A USB output makes the mini fan a power bank (4800mAh) for emergency, supplying power to mobile phone, MP3 or iPod, etc. Frameless, makes noise at 50 db which does not cause any discomfort while working. Flashlight and wrist lanyard included：Long press the power button to open the flashlight function when the fan is not running. The flashlight is quite bright and can be useful in dark areas or in the event of a power outage. And with the included lanyard, you can hang it on your hands or on your travel backpack. Service： Touch-sensitive blades, over-voltage and short-circuit protection protect you, you and your family. We believe in our products, so we offer a 12-month worry-free warranty, it covers defects in materials and workmanship for one year from the original purchase.