Walkie Talkie radio designed specifically for use with Ocean Reef Snorkie Talkie snorkeling communication units. This handheld radio is ideal for communicating with your child or other family member who are in the water wearing an Ocean Reef full face snorkeling mask and a Snorkie Talkie. 4 channels, long range (Up to 500m / 1500ft range, any direction for any number of units), easy to use, adjustable volume. This product is not waterproof. Compatible with other brands, if using same frequency.