Original HYTERA Bluetooth Wireless Earset ADN-01 ESW01-N2(Adaptor earpiece package) for Radio PD785/700/PT580/580 Genuine Guarantee! ADN-01 1. Auto power-on and auto connection with wireless earpiece;  2. Manual paring and connection with other wireless devices;  3. Operation Temperature: -20 to 65°C, Storage Temperature: -40 to 75°C;   4. Complied with CE, FCC and IC certification;  5. Communication distance (without obstacle): 10 meters.  Operation Temperature: -25 to 65°C  IP class: IP54  PTT key life ≥ 100000