mini diving tank set is a mode of underwater diving, where the diver uses an apparatus. Above all, the apparatus is completely independent of surface supply to breathe underwater, it will free your breath in water. divers carry their own source of breathing gas, usually compressed air, allowing them greater independence and freedom of movement than surface-supplied divers, and longer underwater endurance than breath-hold divers.
6 things = 1 order packet (S300, S300+, S400, S400+, S500)
More accessories for diving, you can find it here.
