The DiveAlert SMB (surface marker buoy) features Semi-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.
Solas reflective tape (Coast Guard approved) across the top of 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 the top allows for easy attachment of a light or slate. 400 Denier polyurethane coated nylon material.
The added pocket can be used for a finger spool, as an extra container, or to add weight for more stability in rough water.
Inflation of the SMB can be done in any circumstance. You can inflate the DMB2 with your BC inflator hose, by mouth, or by a second stage regulator.