Super Long Endurance & Updated Powerful Airflow Adopted advanced technology, it lasts 46 hours at speed 1, 35 hours at speed 2, 13 hours at speed 3 after about 3-4 hours of full charge.Foldable Design & Mini SizeFoldable design makes it easy to carry and store. What's more, with the capsule shape (5.1*1.65*1.65inch, weight: 6.38OZ), this rechargeable fan can hide the fan blade, small and easy to slip into your pocket and your handbag.Power bank function and silent operation5V/1A USB output port makes the mini fan a power bank (4800mAh) for emergency, supplying mobile phone, MP3 or iPod, etc. Frameless, makes noise at 50 db which does not cause any discomfort while working.Flashlight and wrist lanyard includedLong press the power button to open the flashlight function pocket 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.