DescriptionThe Snorkie-Talkie Surface Unit is a long-range walkie-talkie 500-meter (1500') range. Any direction any number of units. This unit is compatible with the Ocean Reef Snorkie Talkie and other brands, if using same frequency. This handheld radio is ideal to communicate with your child or other family member who is in the water wearing an Ocean Reef full face snorkeling mask and a Snorkie Talkie. This product is not waterproof. It is powered by 3 AA alkaline batteries (included). Unit has an adjustable volume, 4 channels, PTT timer off and a keypad locking feature.