The phone radiator operates silently so it will not affect disturb you when playing games. The phone radiator has highly elastic spring, which can be tightly clamped on the phone. The semi-conductor cooling technology can quickly cool your phone when it overheats thus prolong the battery’s life . Made of PC and aluminum alloy, the phone radiator is compact and durable to use. The length of the item is 7.8cm, width is 6cm and height is 3.6cm. The phone radiator is suitable for being used in mobilephones whose size is from 4 to 6.7 inches. Item Name: Radiator Material: Aluminum Alloy,PC Input Voltage: DC5V Input Current: 1A-2A Suitable Mobile Phone Size: 4-6.7 Inches Charging Mode: USB Power Supply Size Details: 7.8cm x 6cm x 3.6cm/3.07" x 2.36" x 1.42" (Approx.) Notes: Please note that the radiator will produce hot wind when operating, so don't block the air outlet. Due to the light and the screen setting difference, the item's color may slightly differs from the pictures. Please allow slight dimension difference due to the manual measurement. Package Includes: 1 x Phone Radiator 1 x Charging Cable