In normal Scuba device when the tanks are emptied we have to go to land to charge the tank with compressed air which allows less time to be spent underwater.
This Equipment allows more time to be spent in water by charging the tank in the sea itself. The Equipment consist of air compressor, battery and tank.Whenever the air in the tank is emptying the diver comes to the surface and fill the tank with air by using compressor rather than going to charging station on the shore. This similar to current Scuba equipment except it has compressor to charge air and battery to run the compressor.