Product name: Hanging screen vertical dual-use fan Gear adjustment: 3 adjustable speed Charging mode: USB, can be connected to tablet computer, desktop computer, power bank and power socket Battery capacity: 4000mAh<br><br>Note:USB cable can be connected to: 1. Power Bank 2. Desktop computer 3. Tablet computer 4. Household socket (needs to be used together with charging plug, such as mobile phone charging plug) Material: ABS colour: Black<br><br>Package Contents: 1 x Hanging fan<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.