Mobile phone cooler which adopts 9-leaf turbo fan can effictively cool your phone and improve its performance. It's very practical, especially when you need to use mobile phone for hours or more. It's of compact size, lightweight and quiet, and compatible with 4-6.7 inch mobile phones. Never will your mobile phone become hot again! Features: Mobile phone cooler with 9-leaf turbo fan can effectively reduce the phone's temperature to prolong its service life and improve performance. USB powered type or rechargeable type for your option. The former is more affordable, and the later is more convenient especially when you are outdoors. Silent cooling fan, will not disturb you when you're working, studying, watching videos or playing games. Mini size and lightweight, convenient to use. Stretchable design, fits for 4-6.7 inch mobile phones. Soft silicone pad on the hook can protect the phone from scraches. The upper and lower hooks are designed with an inclination of 140 degrees. Easy to clamp mobile phones tightly, even if the phone is with phone case. Note: Size and color may be slightly different because of manual measurement and different lighting conditions or monitors' setting, please in kind prevail. Thanks for understanding. Specifications: Color: Silver/ Tarnish (Optional) Type: Type 1 -- USB Powered/ Type 2 -- Rechargeable (Optional) Material: ABS Rechargeable Type: Built-in 3.7V 300mAh Lithium Battery USB Cable Length: about 1.5m Item Size: 77 * 45.6 * 16mm / 3.03 * 1.80 * 0.63in Item Weight: 34g / 1.18oz (Type 1); 41g / 1.44oz (Type 2) Package Size: 13.3 * 9.5 * 3.5cm / 5.24 * 3.74 * 1.38in Package Weight: 109g / 3.85oz (Type 1); 116g / 4.08oz (Type 2) Package List: 1 * Mobile Phone Cooling Fan 1 * USB Cable