USB Rechargeable & 3 Modes Adjustable - Portable fan has two built-in 1800 mAh lithium polymer batteries, which can be charged for 1.8 hours, the first mode is the breeze mode, the second is the low wind mode, and the third is the high wind mode. Whether you are at work or shopping, you can last 4 or 8 hours (or different speeds).

Wide Range of Uses - Mini USB fans are easy to carry and easy to store, and truly hands-free neck band fans. Indoor activities are great outdoors! It is an item which works in every scene such as summer festival, outdoor, BBQ, sports watching, walking, climbing, excursion, festival, commuting, and school. Summer can be used as an electric fan. You can enjoy clean and comfortable air.