SMACO Mini Scuba Tank 0.5L Handheld Mini Diving Tank Reusable Scuba Pony Bottle with 5-10 Minutes Backup Air Diving Cylinder for Underwater Exploration Emergency Rescue S300 Plus

I read a lot of reviews and watched a lot of videos on this product, with some suggesting that it perhaps was not worth it and people should opt for the larger size.I purchased this product specifically for use in my swimming pool as I had a small leak and needed to identify it.This product worked well, allowing me to stay underwater for longer periods of time, I guess I was under for perhaps 7+ minute however I was not breathing normally to conserve air, so would almost hold my breath between exhale and breathing in.Pumping it up with the high pressure pump to nearly 3,000 PSI was hard, so I approached it in small batches - I would recommend getting the electric pump for this.Overall, for me it did the job and will allow me to maintain my pool easier.

I'm writing this review because Amazon doesn't allow further comments on reviews, so misleading info stays there for all time.The Chinese manufacturers wrongly call this an Oxygen Tank instead of an Air Tank. It's an unfortunate translation error, perhaps by a 3rd party. But apart from that, their replies indicate that they understand this to be a tank for compressed air, not a tank for compressed oxygen. I don't think the castigation they get from some reviewers is totally applicable.They need to correct this product title (which I have reported to Amazon as being wrong). But apart from that, many people seem to be happy with it.