Stay connected during your wildest outdoor adventures. With a rugged, fully waterproof design, emergency features and a 35-mile range, the T600 H2O keeps you connected and protected during your extreme outdoor activities. The T600 H2O is packed with top-of-the-line radio features, including the ability to float and a water-activated flashlight. The flashlight also includes a red LED to preserve night vision. With these exceptional capabilities, you can count on the T600 H2O to deliver reliable communications during your wildest adventures - whether by land or by sea. How far can I expect my radios to communicate The communication range quoted is calculated based on an unobstructed line of sight test under optimum conditions. Actual range will vary depending on terrain and conditions, and is often less than the maximum possible. Your actual range will be limited by several factors including, but not limited to: terrain, weather conditions, electromagnetic interference and obstructions.