Luminox Sea - ANU 4200 SERIES A.4221 - this is "SWISS MADE" quality for maximum requirements for robustness and excellent readability. The Luminox models of the ANU 4200 Series were developed in cooperation with the US Navy Seals and are now an integral part of the equipment of this special unit of the US Army. Also equipped with the unique lighting system from the Swiss company mb-microtec. The H3 tritium lighting guarantees accurate display in all visibility conditions. The power-independent lighting shows the time precisely in all lighting conditions, without battery consumption or charging by sunlight or artificial light, permanently with constant luminosity, without pressing a button.