CHENGDA EA-2923 Bluetooth Wired Headphones Instructions
- June 16, 2024
- CHENGDA
Table of Contents
ST-1923EA
（EA-2923/EA-3923/EA-1933/EA-2933/EA-3933/EA-4933 ）
Instructions for Bluetooth/wired headphones
A.Bluetooth mode
Bluetooth version: 5.3
Operating Range: >10M
BatteryCapacity：400mAh
Standby time: 168 hours
*Listening time: 24 hours
Power on: Press and hold button for 2 seconds. The indicator light flashes red
and blue and the voice prompt says “power on”
Pairing/Connecting: Check your Bluetooth headset and make sure it’s turned on
and in discovery mode. Wait for it to show up on your phone and selected. The
indicator light flashes blue and the voice prompt says “connected”.
Charging: The indicator light will be red while charging and turns off when
the headphones are fully charged.
Play/pause music: Press button once.
Play the next track: Press and hold button for 2 seconds.
Play the previous track: Press and hold button for 2 seconds.
Pick up/Hang up a call： Press button once.
Redial last number ：Press button twice.
Reject a call：Press and hold button for a while.
Unpairing： Press button three times in a row.
Microphone mute on/off: Press button once.
ANC function : Press and hold button for 2 seconds.
Common problems and solutions
- Unable to search bluetooth headset in your phone. Solutions: ①Make sure Bluetooth is turned on and the indicator light flashes red and blue ②If Bluetooth is turned on and still cannot be searched, please to restart Bluetooth headset and mobile phone.
- After connecting the Bluetooth headset with your mobile phone, there is always disconnection or noise. Solutions: ①The Bluetooth headset is power low, please to charge it soon② There is block between the Bluetooth earphone and
your mobile phone or it beyond the signal distance.
B. Wired mode with USB cable
Connect the USB headset to the computer using an additional data cable, that is, press the normal USB headset to use, and the button operation mode is the same as the Bluetooth mode
FCC Warning
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. Any Changes or
modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment. 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.
FCC RF exposure statement:
The device has been evaluated to meet general RF exposure requirement. The
device can be used in portable exposure condition without restriction.
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