• 【H700 Scuba Tank】Houvan H700 is made of 6061 aviation aluminum, and the three-layer process is gradually adopted to make our diving cylinders stronger and resistant to the erosion of seawater. The 700 has a capacity of 1.9L and can dive underwater Up to 30 minutes, and the actual dive time may change depending on the depth of the dive, the temperature and the environment. Note: The maximum dive depth should not exceed 33 feet, it should only be used at 100 feet when used as a backup origin.