Specifications: 1. After installation, it does not affect the holding with both hands, and there is no metal feeling 2. Silent glare fan, bass operation, no interference 3. Spring telescopic clamp, support and clamping width is 65-85mm, will not hurt the phone 4. Embedded silent fan 7500 rpm DC motor noise reduction operation 5. With LED screen to display the phone temperature 6. Lightweight and portable to carry around to cool down at any time