Hello !
This is my opinion about Dive Portable Lungs
Pros:
I'm not a dive person, but I know if the equipment used for diving is very heavy. But technological innovations are sophisticated like the Dive Portable Lungs. In addition to lightness I also really liked the cool design. NICE HUNT
Cons:
As you say, diving time is getting faster.
Thank you For your comment @johntor
ok no problem :)