Semiconductor cooling chip, 20 seconds fast cooling, non-traditional air cooling principle.Multiple unobstructed wind crossings, noise reduction and mute design, without affecting voice communication.Closely fit the mobile phone, large heat dissipation area, reserve a place for the camera, protect the camera, hang 3.5mm space, trapezoidal card edge, do not press the phone button by mistake.No need to charge, plug and play, reserve charging port location.Comfortable grip, ergonomic design, not tired after playing for a long time.High-quality materials, aviation-grade PC material + aluminum alloy material, durable and durable.Compatible with 4.7-7.2 inch mobile phones.Specification:Color: BlackProduct Size: 150 x 100 x 45mmProduct Weight: 185gMain Material: Aviation Grade PC + Aluminum AlloyInput Voltage: DC 5VInput Current: 1A-2AAdditional Function: BracketPackage Includes:1 x Phone Cooler Handle1 x 1.5m Charging CableMaterial: ABS + Metal