Tecline Semi-Closed Surface Marker Buoy (SMB) buoyancy compensator parts making it harder wearing against

making it harder wearing against punctures

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it can also be adjusted to 20% (BACK-UP mode)

while a yellow would signify an uh-oh

allowing the backplate and harness to be swapped over to a twin tank configuration effortlessly when required

Tecline Semi-Closed Surface Marker Buoy (SMB) buoyancy compensator parts making it harder wearing againstThe Tecline Semi Closed Surface Marker Buoy is a high visibility signalling device that allows the position of divers to be seen from the surface. All divers should at least carry a high visibility inflatable signalling device with them. It can be invaluable, as you'll never know when you need to let people on the surface know your position, or to signal to your dive boat after a dive, if you've drifted away. The semi closed SMB is 122cm 4ft long and