Sony NYSNO-10 Help Manual page 33

When performing optimization of the connection status at this point, the center of the BLUTOOTH communication is
changed to B as below.
Example 3)
The distance between B and A, and distance between B and C: Both are within 1 km (0.62 mile).
Furthermore, when A leaves over 1 km (0.62 mile) away from B (center of connection), it goes out of Group Talk range,
and B and C are reconnected as below. At this time, A hears voice guidance indicating out of range, and B and C hear
voice guidance indicating a member leaving the conversation.
Example 4)
Distance between B and A: Over 1 km (0.62 mile)
Distance between B and C: Within 1 km (0.62 mile)
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