Aluminum
Imported
1.9L Mini scuba tank. The scuba tank size is 16.9*4.49 in,with capacity of 1.9L, and only weight 7.98lb, which could provide about 25 minutes underwater breath(underwater stationary test time). We use an extened tube to connect with pressure gauge, which make it more convenient to check the remaining gas. Moreover, We changed the diving vest to a backpack version, you can easily carry the scuba tank and free your hand underwater, backpack can be adjust by your need