Features: Adopts new semiconductor refrigeration technology, fast cooling, providing you a better gaming or watching experience, can also extend the life of battery. Embedded silent fan, 7500 rpm for DC motor for noise reduction operation, silent design without any annoying noise. Stretchable soft silicone back clip , stable and tightly cliped with phones, protect your machine from scratches and drop. for Creative design and beautiful appearance heat raditor with temperature display screen, mobile phones within 2.55-3.34" width are compatible, suitable for playing games, watching movies, etc. Compact in size, easy and portable for you to carry or store in your pocket. Specifications: Material: ABS Size: Approx. 84x35x65 cmm/3.31x1.38x2.56 inches Input Voltage: for DC 5V Power Supply Mode: USB Type-C Charging How to Use: Back-clip Type Applicable for Phones: Width within 65-85mm/2.55-3.34" Package Includes: 1 Piece Mobile Phone Heat Radiator note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.