Castoro range of rebreathers were designed for recreational and professional divers who want all the advantages of a closed circuit rebreather without the weight. All Castoro rebreathers weigh a fraction of scuba setup or other closed circuit rebreathers. Castoro rebreathers are modular and allow many different configurations ranging from a CCR oxygen rebreather, SCR Nitrox rebreather, mechanical CCR and electronic CCR. Also various harness and bailout options are available.