3.3 Volume “+”button ：
3.4 Micro USB port: battery charging port
（4）Charger parameters: I/P：100-240V O/P:5VDC 2A
3.5 indicator lamp ：
3.6 Basic product parameters:
（2）Adapter : FX2U-050200U Input:100-240V AC 50/60Hz, Output:DC 5.0V 2.0A
(3）Bluetooth version：V5.0
(4) Bluetooth transmission distance：10m Min
（1）：Micro USB port，The headset has a built-in battery charging input port. When the
battery voltage is too low, the headset will emit beeps at regular intervals. At this
time, you should use the dedicated charger and dedicated charging cable equipped by our
company to charge the headset in time, and it will be fully charged in about 2:00 hours.
（1）Battery specifications: Built-in rechargeable battery capacity 3.7V 260mAh
(5）The normal working voltage of the earphone is 3-4.2VDC, and the working current is
about 20mA.
（1）When the headset is turned on, the indicator light will flash green in regular
intervals (about 5 seconds)
（2）Charging in the off state, the red light flashes when charging. The light goes
out when full.
When answering a call or playing music, press the “+” key, the sound heard by the
ear becomes smaller, and the user can choose the appropriate volume to meet his comfort
requirements.
（2）When the battery is fully charged, it can work continuously for about 10 hours at
half volume.
（3）When charging, please use our special charger, and disable non-our chargers to
charge the headset to prevent damage to the headset.
（3）When Bluetooth is searching, the indicator light flashes red and green
alternately.
