S300Plus 0.5L Mini Scuba Tank Refill Tool:Refill Adapter or safety valve

or safety valve

while the dry-top snorkel automatically seals underwater to prevent water entry

7L mini scuba tank for easy underwater breathing

With the regulator

S300Plus 0.5L Mini Scuba Tank Refill Tool:Refill Adapter or safety valveThe S300Plus delivers smooth, controlled airflow in a compact design built for quick dives and backup use. Its integrated respirator includes a high performance pressure reduction system that regulates output to around 2 MPamaking breathing feel more natural and effortless. With the regulator, gauge, safety valve, vent, and mouthpiece all housed in one lightweight unit, the S300Plus keeps your setup simple, portable, and ready for adventure. CE, TUV,