Hold the tank at the maximum tension of more than 100kg.

Normal tank belt would lengthen when it gets wet in the water, this often leads the trouble of tank displacement at the time of traveling on the surface of water and or getting out of water.
The " bio- tank lock pro" will maintain the maximum tension of 100kg or higher in holding the tank with assist of the built-in spring. For this reason, even when the belt gets wet with water, the built-in spring will absorb the belt lengthening, thus it will not cause the tank displacement.

Elimination of the tank-belt length adjust lever.

The tank-belt length adjust lever available on the bio-tank lock 2 has been eliminated. This prevents unnecessarily readjustments of the tank-belt length due to the unintentional touch and move of the tank-belt length adjust lever. This secures the stable and quick setting, and it is very beneficial for professional divers who do the routine work at the fixed site with the same the tanks with the same diameter.

Please refer the PDF file here for the details of the belt adjustment.