The DiveAlert SMB.LED (surface marker buoy) features Closed-Circuit (one-way valve) construction, which prevents air spill at the surface. Inflate on the surface to attract visual attention or redundant flotation. Inflate at depth to send up as a surface marker and illuminate at night.
Six waterproof LED lamps powered by a twist on (2) AAA battery power supply. Solas reflective tape (Coast Guard approved) across the top of the SMB creates better visibility day and night. An Over-Pressure Valve (OPV) prevents bursting and easy air dumping. 65 inches long x 8 inches wide = approximately 40 lbs. of lift. Nylon strap handle on top allows for easy attachment of light or slate. 400 Denier polyurethane coated nylon material.