Silicone Necklace fi jar or a 2nd regulator octopus to the neck for quick access or alternative use of two separate regulators with double tanks. The regulator necklace is an increasingly popular method to manage your alternate air source. The necklace concept derives from technical divers that had a need to keep their back-up regulator close to their mouth for instant availability.
Scuba Gear Technical Information:
Length: 62 cm ( 24 inch)
Diameter: 9.5 cm ( 3.74 inch)