Diving regulater,first and second stage regulator

The piston first stage                                                                          
1.Type-Flow through piston and balanced diaphragm design;                       
2.Dry ambient chamber;                                                           
3.Balanced diaphragm design;                                                   
4.Thermal Insulating System(TIS);                                                     
5.Anti Freeze system;                                                                                
6.4 Low pressure ports;1 High pressure ports;

Second stage regulator:

1.Adjustabl stage II regulator;     

2.Color available: black,red,green,yellow;

3.Coome with food-grade silicone mouthpiece.