Earphones C-309 Bluetooth Earphone User Manual
- June 4, 2024
- Earphones
Table of Contents
C-309 Bluetooth Earphone
User Manual
Product specification
Product Model: C-309
Battery specifications: Earphone 3.7V 35mAh; Charging bin 3.7V 250mAh
Supported modes: HFP/HSP/A2DP/AVRCP
Sensitivity: 105D8 ±3dB S.P.lat 1KHz
Signal distance: 10m (ideal environment without any large obstacles)
Running time: about 3 hours
Talk time: about 3.5 hours
Standby time: about 80 hours
Charging time: charge the charging box for about 1.5 hours, and charge the
headset for about 1 hour Charging times for earphones in the charging bin:
about 2.5 times
Function Operation Description
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the boot takes the earphone out of the charging bin and starts it automatically or press the left and right earphone multi-function buttons for 3 seconds to start it.
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turn it off put the earphone into the charging bin to automatically shut down/long press the left and right earphone multi-function buttons for 5 seconds to shut down.
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Start and reconnect after the pairing is successful, the Bluetooth headset will enter the connection state preferentially and automatically return when
it is turned on for the second time Connect to an already connected cell phone. -
Play/paused the standby state, you can click the left and right multi-function keys of the headset to play music directly or click the left and right headset multi-function keys to pause the playback.
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Switch songs when playing music, click the multi-function key of the earphone three times to switch up and down.
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volume increase and decrease double click the left and right multi-function buttons to increase and decrease the volume.
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Answer incoming calls when a mobile phone call comes in, you can click the left and right multi-function keys of the headset to answer the call.
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Hang up the call during a phone conversation, you can hang up the phone by clicking the left and right multi-function keys of the headset.
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Call rejection when a phone call comes in, long press the left and right multi-function buttons of the earphone for 2 seconds to reject the call.
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Redial the last number when standby or playing music, long press the multi-function button of the earphone for 3 seconds to dial your call, and record the last call made on the tape.
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Activate the voice assistant and hold down the headset multifunction button for 1.5 seconds to activate Siri or Google’s Voice AssistantControl phone operation.
pairingCommon (pairing mode)
- Take it out from the charging bin or press the left and right multi-function buttons for 3 seconds to start automatically pairing
- Activate Bluetooth on your phone or other device and tap to enter pairing
- The two earphones can also be paired with a mobile phone. For details, go to Step 2Operation method Perform operations.
Charging operation
- Connect one end of the Micro USB charging cable to the USB port of the charging box and the other end to the charger charge the charging box, when the charging box electric quantity is in the indicated range of the corresponding indicator light, this position white indicator light flashes at an interval of 2 seconds until the electric range of the indicator light is fully The indicator that enters the next power range blinks. After the battery is fully charged, all indicators are on.
- Charge the earphone: put the earphone into the charging bin to charge the earphone automatically light is red and goes off when it is fully charged: the blue indicator light of the charging bin keeps on (when the charging bin is fully charged, The four electric quantity indicators are all on. When the electric quantity of the charging bin decreases to the corresponding electric quantity, the corresponding refers to When the headset is fully charged, the blue indicator lights in the charging bin are all off.
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation
NOTE: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more
of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Warning: changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment