A compact version of the 4300, with the power you need for diving. The 4200 has an unbreakable ABS body with thermoplastic overmolded accents and polycarbonate lens. It uses a clever magnetic switch that operates outside of the body to prevent leaking. The switch can be easily removed for washing off sand and dirt. A three-surface compression fit o-ring makes the Nemo completely watertight. Designed with negative buoyancy, a lead ballast is not necessary. A spare Xenon lamp is included and stored underneath the reflector. Submersible to 500 feet and powered by 4 C alkaline cells.