Syorn USB Mini Fan Air Conditioning Blower Eyelash Glue Quickly Dry Eyelashes Dryer (Purple) This is an easy operating mini air conditioner. You can use it for eyelashes extension glue quick dryor use as normal cooler in summer. It is powered by builtin rechargeable lithium battery or through USB cable. Comes with a strap for easy carrying. A creative and practical gift for your friends, families. Working Voltage: 5V. Working Current: 500-1000mAh. Battery Capacity : 1400mAh.Work Time : Up to 5 hrs.Charging Time : About 2 hrs. Note: 1. This machine isn't waterproof, so when you wet the sponge, please take it out. 2. Don't fill too much water into the sponge in case the water will spill out and wet the machine.