▶Features: -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”-6.5” inch mobile phones ▶It is recommended to use 4.6-6.5 inches mobile phone Presses blow, feel better, more flexible operation Supported devices: Most touch screen devices version, for iPhone users , it is recommended that they only order 1 pair. Not limited to mobile phones and thick. Supported games, but not limited to: Survivor rules for Royale Knife PUBG Mobile Knife Important actions.