2 People Full Duplex: This wireless helmet headphone supports 6 person pairing, 1 to 5 switching intercom, 2 people full duplex.
Stable Performance: 5.1 chip, connection distance 10m / 33ft. IP65 waterproof, windproof and anti noise.
Call Distance: Up to 1200m / 3937ft call distance (barrier free), generally used in the field to a distance of 600‑800m / 1968‑2624ft.
Automatic Answering Phone: The automatic answering phone function keeps you undisturbed while riding.
Powerful Functions: Built in lithium battery 2 x 850mAh (included), 260h standby and 29h working time.