2-in-1 Magnetic & Clip-On Semiconductor Phone Cooler

Engineered with premium ABS and high-grade aluminum alloy, this 120g K21 2-in-1 semiconductor phone cooler delivers rapid, high-efficiency ice cooling to prevent thermal throttling, lag, and frame drops during high-intensity mobile gaming, 4K video recording, and live streaming. Powered via a Type-C plug-in interface at 15W output, it provides continuous thermal dissipation without relying on internal batteries, keeping your device running smoothly under heavy processing loads.

Available in Black with AI intelligent temperature control, the K21 features an integrated LED digital display screen for real-time temperature tracking. Its versatile 2-in-1 hybrid mounting design combines strong magnetic attraction with a detachable back-clip bracket, allowing it to attach seamlessly to MagSafe-compatible smartphones, non-magnetic devices, and tablets without blocking side buttons or camera lenses.

Designed for high thermal conductivity and low-noise operation, the radiator utilizes active semiconductor refrigeration to rapidly pull heat away from your device's processor while maintaining whisper-quiet acoustic levels for clear voice chat and audio broadcasting. Combining silent 15W semiconductor cooling, durable alloy-and-plastic construction, AI thermal monitoring, and multi-device mounting, this plug-in phone radiator maintains peak device performance wherever you play or stream.