SMACO Scuba Tank Diving Gear for Diver Mini Scuba Tank Oxygen Cylinder with 15-20 Minutes Capability Diving Oxygen Underwater Breathing Device 1L Diving & Snorkeling Equipment

I'm a professional scuba diving instructor. A full (200 bar) 1L cylinder (200 litres) will give you about 50 breaths on the surface if you breath like a typical adult at rest. The sounds like a lot but you need to half that at 10 metres depth (as pressure increases volume decreases) and even less deeper than that. You also won't be at rest underwater so your breathing rate will increase. You'll be tempted to hold your breath underwater to conserve air. NEVER do this underwater when brething compressed air or your lungs will explode (literally) as you come up and the compressed air in your lungs expands. Forget the claims of 20 minutes - if you get 2 minutes you'll be lucky. Most likely you'll run out of air and have to bolt to the surface or drown, risking lung injury. If you want to scuba dive go on a proper course and learn what to do - NEVER, I repeat NEVER give something like this to your kids. It could literally kill them.

Firstly, Extracting pure ‘Oxygen’ from air is an expensive process which is not achieved with a hand pump!Secondly, Scuba divers do not use 'Oxygen' cylinders except in cases of emergency at the surface. Instead, they use 'Compressed Air.' This is ordinary air found above ground level anywhere in the world which is then compressed (with the use of an expensive 'Compressor') into the diving cylinder at great pressure. In simplistic terms, that compressed air is then eked out little at a time, to the diver throughout the length of the dive.Leaving aside all other issues I will explain the maths. The air we breathe is made up of 21% Oxygen which, when breathed at depths of over 85 metres (approx 275 feet) turns toxic (i.e. poisonous!) and will kill. BUT!, if those same diving cylinders were filled with 100% Oxygen it turns toxic at depths of just 10 metres (33 feet!) as any competent diving instructor will explain.One customer elsewhere asked if this is all the equipment his children need for scuba diving in their swimming pool. I wonder if he’s now checking the depth!!!If the manufacturers of this questionable item of equipment do not understand the basics of oxygen, air, depth and scuba diving in their most rudimentary forms they should NOT be making such equipment. Avoid all contact with this device. It is clearly not fit for purpose and certainly not fit for the minimum one star rating I am required to give.NM(Active diver/instructor for over 45 years)

I work in the film industry in the Stunts department and purchased this product for a specific Stunt where I had to use the equipment in a confined space and it worked exactly as advertised. I am very happy with the product.

Just as the title say Smaco is awesome, this is my third purchase from Smaco and they have all excided my expectations! I have the compressor to fill my own tanks and the smaller tank with full face mask. I was wanting a little more dive time as my other one is small and last less than 10 minutes. This unit is rated for 20-30 mins! I'm so excited to put it to use in some nicer waters. For the price of smaco products you can't beat it! The product have all been excellent quailty. Eventually when I get certified I can use these as my back up tanks! If you decide to buy SMACO you won't regret it!

Bombolino quasi inutilizzabile!Non si riesce a fare la caricaManca il riduttore di ricarica e in ogni diving non esiste

Es un producto de mucha calidad y muy recomendable.A parte de eso el servicio de post venta del vendedor es muy bueno y contestan muy rápido.En general tanto el vendedor como el producto son altamente recomendables.

Dieses Tauchset ist gut verarbeitet und funktioniert wie es soll. Die Tasche eignet sich aber nur bedingt für den Transport mit montierter 1. Stufe, da die Flasche dann quer in die Tasche gelegt werden muss. Das Set ist relativ neutral unter Wasser. Zusätzliche Gewichte waren nicht notwendig. Das Set eignet sich vollständig für einen kurzen Tauchgang, ist aber nur Personen zu empfehlen, die einen entsprechenden Tauchschein besitzen. Man könnte damit auch tief tauchen, doch der Luftvorrat ist bei dieser Flaschengröße sehr begrenzt.