0.5L Mini Scuba Diving Tank DOT Certification

**Update** Seller responded with instructions and offered free adaptor so I can fill using my compressor. Great service here! Product is exactly as advertised and appears sturdy and pieces all fit as they are supposed to. I ordered the tank with the "Fill Adapter" which appears to be a way to attach the mini tank to a standard scuba compressed air tank. The instructions are limited and do not include any procedures to actually fill the tank. I have a hand air pump, which would take a considerable amount of time, and compressor, which should take less time, however neither of which can connect to this tank in any way. This product gets a two-star review due to the above, and the printed text: "If you encounter trouble during assembly or use, don't worry—we offer 24/7 technical support. Dive confidently knowing assistance is just contact us away." - Note that nowhere on the page, in the pictures, or in the documentation provided with the tank, is there any contact information. Phone, email, fax, or physical address are nowhere to be found. An online search only yields sites to purchase the same tank from other websites.

Been scuba diving since 1975. Now that I’m old, I was looking for a scuba that’s light weight that I can check out potential dive sites in Riviera Maya. This tank flips the bill. Weighs nothing under water. The built in regulator works and feels like my old scuba pro mark V. Very easy breathing. Purge works very well, but not really needed as there is minimal water to purge. Normal full breathing, air supply at 3,000 psig lasts 9 minutes in 10’ water depth. Also, very easy to feel when last two breaths are coming up, but also have a gauge to go by. When gauge hits red mark, there is about five or six full breaths left in bottle. Only takes 12 minutes to fill using a small compressor.

Great views fun to use

Have not used yet. Still attempting to understand.

Perfect backup emergency tank. I feel much better k owing I have that extra 10-12 minutes should I need it!

Excelente buena calidad

This is a good, well-rounded tank. The regulator is of good quality and has all the features a regulator should have. I like all the straps that come with it; they work well. The arm strap is the perfect length to allow full movement even if you're using the tank. I really did not find any problems with it at all. There is one thing to note, though - for someone less experienced, detailed instructions are not included. So if you're not already familiar with how this works, you might be a little lost with some of the features.

I'm sorry this review is subjective. I wish I could have done more to run it through real-world use, but I can't right now. That said, let's get into it. The small tank is sturdy and well built (comparing it to my two scuba tanks). The mouthpiece is pretty standard and probably just what you expect. Here's my concern. The tank weighs in at about 4lbs and at 15" long, its a lot to hold with just your mouth I'm thinking lockjaw by afternoon). Add drag, trying to move your head side to side, and diving or ascending and the 5-10min air supply might easily outdo your jaw muscles. Summary, the product quality is good, but the concept, in my opinion, isn't.