HYDROSTAR:Wide suction cup base with bungee safety leash allows Hydrostar to secure easily to any deck. while magnetic socket keeps light firmly seated in the suction cup. Waterproof to 50'. •Pulse: Xenon Strobe. •Multi-Strobe (Standard): LED Strobe. Flash Light and Red & Green Marker •S.O.S. Deluxe: SOS signal. Xenon Strobe. Flash Light and Red & Green Marker.