Check the listing for details. STANDART HORIZON HX 280ES. Condition: Used. Listed at 141.00 USD. This Standard Horizon HX 280ES calling system is a reliable and efficient way to communicate on VHF radio. With its compact design and easy-to-use interface, this unit is perfect for marine and aircraft radios. It is a great addition to any radio communication system and is sure to enhance your ability to communicate effectively. The HX 280ES model is a proven choice for those in need of a reliable calling system. It is a unit type product and is designed for use with VHF radios. This product is perfect for those in the marine and aircraft industries who require a high-quality communication system. Floating / Submersible IPX7 Waterproof rating (3.3 feet or 1 meter for 30 minutes)All USA, International and Canadian channelsSelectable 6W / 2.5W / 1W output powerReceive WX and FM radio bands 76MHz to 108MHzHigh resolution dot matrix LCD displayE2O Easy to Operate Menu systemProgrammable function keysSpeaker mic JackHigh capacity 1850 mAh Li-Ion battery3 hour desktop rapid charger12VDC and 110VAC charging cables and charging cradle included3 year waterproof warranty