maxesla mini handheld fan portable electric outdoor fan with 3 speed operation, rechargeable desk fan, small foldable usb cooling fan for home office travel blue maxesla <b>outdoor portable fan: </b></br> palm-sized design with handle, the fan could be easily hold in one hand and take wherever you go. it would be a good partner for you when going outdoors like travelling, hiking, climbing, camping, exercising or enjoy exciting moment like sports meeting, basketball and football game. </br> <b>indoor mini fan: </b></br> besides, fold the handle and put the fan on desktop, enjoy working and leisure time in office, bedroom, living room, etc. </br></br></br> <b>specifications: </b></br> color: black, blue</br> battery type: rechargeable li-ion battery 2600mah</br> output power: 4w; input current: 5v / 0.5-0.8a</br> charging time: 4 hour; working time: 2-8 hours</br> speed level: 3</br></br> <b>package content: </b></br> 1 × fan</br> 1 × usb cable</br> 1 × 18650 rechargeable battery</br> 1 x metal clip</br> 1 × user's manual </br></br> <b>note before using: </b></br> please remove the white insulator under the battery cover and place the battery correctly (match up the flat side of the battery with the spring) before using, or the fan can't hold a charge or would only work when plug-in.