XIANQI Features:1. Application - Sick of the heating phone in your hand? This little fan is for mobile phone or other small heating electronic devices. It can provide your device some cool wind and reduce the heat.2. Detachable - Uses a clamp style installation, just clip the fan on your phone when it's needed and remove it after using, which will not make your device become a bulk.3. Advantage - This product is compact enough to take away everywhere with your mobile phone. No matter where you are, you can experience the good that it would bring.4. Great GIFT - No one would love a heating device in hand or pocket. Have no idea what would send for your friend? This one would be a good choice for you5. Power Supply - Charging/Rechargeable type available. Comes with USB cable. Compatible with mobile power source.Notice:Actual color may be slightly different from the image due to different monitor and light effect.Please allow 1-3cm deviation due to manual measurement.Description:Size: 8*4.5*2.8cmBattery capacity: built-in300 mACan be used continuously: about 2.8-3 hoursMain material: PCInput voltage: DC 5VInput current: 1A-2AColor/Style: As the picture shownincludes:1 x Cooler1 x Charging cable(phone not included)