More quiet and strong wind than other usb rechargeable fan, can be used on tabletop or hang on the nail/hook. Three speeds to choose, has very strong wind at the third speed. This mini desk fan be used for personal cooling and energy-saving air circulation in hot summer. This battery operated desk fan built-in removable 1500mAH lithium battery, can last working 3-8 hours after full charged, more convenient to use this rechargeable fan for your travelling in summer. Comes with a charging cable, you can charge the rechargable desk fan by power bank or your computer usb interface at your office or home. Notes: Please open the battery cover and take off the electrify isolator card from battery slot at first time use. This small portable fan is lightweight, if it easy to fall over while using the third wind speed, you can peel off the adhesive sticker on its bottom to fix it.