IC-M87E Waterproof Marine/PMR VHF Transceiver Handheld'ATEX Version' IPX7 Waterproof protection (1M depth for 30 minutes) Rugged compact and lightweight body Standard Li-lon battery pack PMR Mode (146-174 MHz) with 22 free programmable channels (subject to licence) CTCSS/CTCS tone signalling standard in PMR mode Ergonomic key layout for simple operation Self check functions checks temperature, battery voltage and water intrusion Atex version available