Savvies Xtreme Glass HD33 Clear tempered glass for the Polar M400 features a 9H surface hardness and a dirt-repellent surface, providing maximum display protection for your device. Rounded edges, a pleasant surface, and extremely high transparency ensure that the optimal usability, display brilliance, and touch sensitivity of the Polar M400 are maintained. Precision cutting guarantees a perfect fit for the Polar M400. The rounded edges provide a comfortable feel when using the device. The special surface coating repels grease and dirt, reduces fingerprints, and ensures easy cleaning of the surface. With a light transmission of 94%, it offers a crystal-clear and sharp display. A surface hardness of 9H provides perfect protection against scratches and impacts. Savvies HD33 Clear is only 0.33 mm thick and preserves the original touch sensitivity of the device. The special silicone adhesive layer guarantees easy and bubble-free installation. Compatible with Polar M400 / M430.