About HD2 V3 version: Dual band DMR ham radio; supports both digital and analog communication modes; compatible with DMR Tier I & II and MOTOTRBO systems; handheld ham radio for reliable amateur radio and two way radio communication; FCC ID: 2A3OOHD2 Talk Alias & Digital; display contact names instead of numeric IDs; ideal for DMR ham radio operators, club activities, and field communication Large-capacity contact storage; built-in 300,000 DMR contacts and support importing 500,000 DMR contacts; convenient for frequent multi-team amateur radio contact IP67 Waterproof DMR Radio; resistant to water, dust, and harsh environments; ideal for hiking, camping, off-road adventures, search and rescue, emergency communication, and outdoor field operations NOAA weather alert & emergency function;.