The battery-operated version of the H4 also focuses on perfect illumination. It brightens almost the entire human field of vision, allowing for both spatial and peripheral seeing. Ideal for anyone who has a clear goal in sight while still wanting to keep an eye on their surroundings – such as electricians, mechanics, or evening walkers. To ensure you’re not suddenly left in the dark, the H4R warns of a low battery level with a blinking signal and switches to backup mode. Better safe than sorry.