The Standard Horizon HX300 compact, ergonomic case design is a result of the new ultra small, large capacity 1800 mAh 3.7V Lithium Ion battery technology. This gives the radio a much smaller case design yet light enough to float face up if dropped in the water. New intuitive menu system allows easy access to all of the setup functions of the radio, making it easy to customize settings based on the preferences of the user. Because the HX300 is built better, it’s backed better. If your Standard Horizon HX300 ever fails for any reason including water damage during normal use in the first three years, Standard Horizon will repair or replace it free, without hassle or charges… period! If it fails thereafter under normal use, the product is covered by Standard Horizon’s Lifetime Flat Rate Service Program. If the HX300 accidentally goes overboard a flashing RED LED is automatically activated to help locate and retrieve the radio at night.