Tank volume: 3.5 cu.ft./ 0.5 liter Tank material: aviation aluminum Tank size:35*6*6 cm Color: green, blue, black, custom Usage scenario: backup air for deep diving, snorkeling, fire protection, call fall into river self-rescue, training, clean boat bottom etc. Logo: customizable Breathing time:5-10 minutes Limited depth: 10m/ 32 feet Product information: 1* 3.5 cu.ft./ 0.5 liter, 1* breathing head
