Moulded Construction The XR938H is both slim and lightweight in construction. Manufactured from a high impact polyamide nylon material which ensures the helmet provides high levels of comfort and durability. The metallic paint finish ensures maximum heat reflection.Full Face Coverage A curved design with a clear spatter shield over the optics provides maximum clarity. The helmet is fully adjustable to suit all head and body types. Features full neck coverage, locking headgear and automatic power on/off switch.Fast Switching The auto on, auto darkening, wide view lens switches from light to dark in 1/30,000th of a second and offers continuous eye protection against UV and IR radiation, even when the lens is in the light state mode. The grinding switch is conveniently located on the outside of the helmet. The switch locks the filter in the light state (Shade 4) to enable the helmet to be used as a grinding visor.Solar Powered The helmet is powered by a solar cell with replaceable backup