Mz300-b diving mask mz300-b diving mask is suitable for conventional diving and saturation diving with air and gas mixture, such as underwater cutting, welding, photography, inspection, fishing and other underwater operations. It has the advantages of safety and reliability, sensitive air supply regulation, smooth breathing, comfortable wearing, clear communication, wide vision and convenient underwater activities. It is an ideal diving equipment for divers for underwater operation. The main components are composed of diving mask, air supply valve, combined valve and telephone transmission and reception system, which are supplied by umbilical cord or self-contained emergency gas cylinder. The maximum service depth is 300m and the overall dimension is 320 × two hundred × 300m
