LONG RANGE WALKIE TALKIE – 500m / 1500ft range. Any direction any number of units. This unit is compatible with other brands, if using same frequency. WALKIE TALKIE RADIO designed specifically for use with OCEAN REEF SNORKIE TALKIE snorkeling communication units. 4 channels, long range, easy to use, adjustable volume. 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.