Function Button Sound (Speakers) Status Indicator
Call Transfer (from
earphones to mobile
phone and vice versa)
Volume Up + double-click “Beep” tone once (from earphones to
mobile phone and vice versa)
--
Volume Adjustment Press +/- buttons once to
increase / decrease the volume
by one level during call (8
levels in total)
Beep for maximum and minimum levels --
-- -- -- The blue light blinks once every 5 seconds
On-hold mode without
mobile connection
(no network within
the range)
-- The blue light blinks once every 5 seconds
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