Standard Horizon HX-400 IS is a rugged, intrinsically safe handheld VHF marine radio designed for use in hazardous environments. This compact device is certified to meet stringent safety standards, making it suitable for use in potentially explosive atmospheres such as oil rigs, chemical tankers, and industrial facilities. The HX-400 IS offers clear communication with 5 watts of transmit power and features a waterproof design (JIS8/IPX8 rating). It includes essential marine functions like channel scanning, dual watch, and one-touch access to Channel 16. With its long battery life, easy-to-read display, and ergonomic design, the HX-400 IS provides reliable communication in demanding conditions while prioritizing user safety.