OceanReef Snorkie Talkie (MASK NOT Included) The Snorkie-Talkie provides you with the ability to talk to your buddies or even the boat by just speaking into the mask. This allows you to share your experience with other snorkelers while also maintaining contact with the boat or someone on shoreWith a max range of around 275m you can communicate with anyone else on the same frequency in the water, boat or on the beach. Waterproof to 3m you don't have to worry about getting them wet just don't dive down too deep.Easy to Install in Two Steps. First Ever Radio Communication System for Snorkelers.Simple to Use, Communicate while Snorkeling w/Snorkelers & People On-Boat-and- Land.Unique, Patented Technology, Exclusively Available for Ocean Reef FFM Snorkeling Masks