Wearable devices face a fundamental challenge: thermal management in increasingly compact designs. Traditional cooling solutions like heat spreaders used in smartphones are impractical for tiny PCBs in XR glasses and smartwatches. This limitation becomes more pressing as devices add features like on-device AI and AR capabilities, creating heat without adequate dissipation methods.

At MWC 2026, xMEMS unveiled its XMC-2400 active cooling solution, an all-silicon design that's just 1mm thick and consumes only 30mW of power. The technology moves air at 35 cubic centimeters per second while maintaining IP58 dust and water resistance, making it ideal for integration into wearables. The company demonstrated the tech on 3D-printed smart glasses, showing a 20-degree Celsius temperature drop in just one minute.

The innovation arrives as XR glasses gain popularity with features like custom waveguides, built-in navigation, and augmented reality. Brands like RayNeo have struggled with heat issues on devices like the X3 Pro, where limited battery life compounds thermal challenges. With silicon battery advances already doubling smartwatch runtime, efficient cooling could be the next breakthrough enabling all-day wearable performance.