0.5L Mini Tank Dive Scuba, 5-10 Minutes Underwater Breath Device Portable Diving Cylinder Oxygen Tank Kits, Reusable Pony Bottle, Underwater Diving Breathing Training, 10M Deepest Water

Bottle mouth design: 1 - luminous instrument, deep pressure resistance visible at a glance, underwater depth of 80 meters is still clearly visible. 2 - pressure relief valve to release pressure, press to release the pressure of air venting. 3 - air filter to breathe pure air, multiple filter design to breathe pure air.Professional custom-made dust cap protects the air inlet nozzle to prevent bumping and affecting performance, 3 types of inflation according to the use of scenarios to choose, the maximum pressure of inflation: 3000PSI/200BAR/2OMPA.Multi-layer treatment for corrosion and high-pressure resistance: the aluminium alloy with multi-coat treatment has a fully automatic spraying mirror layer, mirror treatment with aluminium alloy,6061 aluminium alloy hot extrusion one-piece moulding.