DescriptionStay longer underwater with the new MiniDive Pro! This 0.5L 200 bar (3000 psi) tank is very simple to use — just take the regulator in your mouth then breathe! The aluminum tank, wrapped in a handmade navy blue protection, gives you up to 10 minutes of autonomy underwater. Anywhere you are, only with your arms, you are able to fill completely your MiniDive Pro up to 200 bar (3000 psi) with the M4S Hand Pump! 4S means "4 stages" which correspond to the number of cylinders in the pump tube, which makes pumping in high pressure easier. Both the tank and pump can be attached securely to your chest thanks to the adjustable and elastic harness.