ETECH EBT4-21554 TWS Earbuds User Manual
- June 26, 2024
- Etech
Table of Contents
ETECH EBT4-21554 TWS Earbuds
Product Specifications
- FCC ID: 2A3ZO-21554
- Model: TWS Earbuds EBT4-21554
- Product Key: 4SN019A, 4SN019ATOL
- Input: Micro USB
- Charging Voltage: DC 5V-1A
Product Usage Instructions
Charging Instructions
Charge the Earbuds: Put the earbuds into the charging case for
automatic charging. The red LED light indicates charging and turns off when
fully charged.
Charge the Charging Box: Use a Micro USB cable connected to a USB charger
with DC 5V-1A output.
Earbud Pairing
Initial Pairing: Take out both earbuds simultaneously from the charging
case. The LED lights will flash blue and red. Once one LED turns off, both
earbuds are ready to pair. Enable Bluetooth on your device and search for
‘swissbrand glow’ to connect.
Re-connection: Earbuds will attempt to re-connect with the last paired
device on restart. If not successful, place the earbuds back in the case and
try again or
connect manually.
Earbud Button Functions
Refer to the following functions for controlling the earbuds:
- Power ON/OFF: Press & hold (3s) L/R earbud
- Play/Pause: Press once L/R earbud
- Increase Volume: 3x Press R earbud
- Decrease Volume: 3x Press L earbud
- Next Track: 2x Press R earbud
- Previous Track: 2x Press L earbud
- Voice Assistant: Press & hold (2s) L/R earbud
Answer/End/Reject Incoming Calls:
- Answer/End: Press once L/R earbud
- Reject: Press & hold (2s) L/R earbud
FCC Statement: This equipment complies with FCC rules regarding Class B digital devices to prevent harmful interference. Follow installation instructions to avoid radio communication interference.
PRODUCT KEY
- Earbud indicator light
- Multi Function Button(MFB)
- Micro USB input
- Charging case battery indicator
- Charging case LED light
CONTROLS
Charge the earbuds
Put the earbuds into the charging case, the earbuds will be charged
automatically. The red status LED light will be on during charging and will
turn off when fully charged.
Charge the charging box
Use a Micro USB cable connected to a USB charger (DC 5V-1A)
The Steps for dual earbud pairing (First use only)
Take out both earbuds from the charging case at the same time. The LED light
on both earbuds will be flashing blue and red. One of the earbuds LED will
turn off after 2 seconds. This means that both earbuds are ready to pair. Turn
on the Bluetooth on your device and search for a new device then select
“swissbrand glow” to connect.
How to re-connect
The earbuds will automatically try to reconnect with the last paired device
after restarting. If not put the earbuds back into charging case and try
again, or connect manually.
EARBUD BUTTON FUNCTIONS
- Power ON: Press+hold(3s) L/R earbud
- Power OFF: Press+hold(3s) L/R earbud
- Play/Pause: Press once L/R earbud
- Increase Volume: 3x Press R earbud
- Decrease Volume: 3x Press L earbud
- Next Track: 2x Press R earbud
- Previous Track: 2x Press L earbud
- Activate Voice Assistant: Press+hold(2s) L/R earbud
ANSWER/END/REJECT INCOMING CALLS
- Answer/End: Press once L/R earbud when incoming calls
- Reject: Press+hold(2s) L/R earbud
FREQUENTLY ASKED QUESTIONS
The smartphone cannot find the wireless earbuds
Check if earbuds are powered on and flashing red and blue alternately. If not found, restart both earbuds and Bluetooth search on the phone.
Issues while using the wireless earbuds
To troubleshoot issues, reconnect with the smartphone after powering on and restarting the earbuds. Ensure proper charging by observing the red LED indicator in the charging box.
Wireless earbuds disconnect or make noise when connected to smartphone
If experiencing disconnection or noise, recharge the earbuds. Avoid obstructions between the device and earbuds, maintain signal stability, and keep devices in the same direction.
The smartphone cannot find the wireless earbuds
Check whether the earbuds power is switched on or not. Does the status LED light flash red and blue alternatively? If the wireless earbuds still haven't been found after switching power on, please restart both the earbuds and the bluetooth search on your phone.
There is something wrong with the wireless earbuds while using them
Please try to re-connect with the smartphone after turning it on and restarting the earbuds. Check the charging status of the earbuds by putting them into the charging box until the red LED indicator is on. Then take them out and let them try to re-connect with your device.
The wireless earbuds always disconnect or make noise when connected to smartphone
The wireless earbuds power status is low, please re-charge it. There is an obstruction between the mobile device and the wireless earbuds, or the wireless distance is beyond the signal range. Please do not cover the wireless earbuds with your hands in order to maintain the continuous stability of the signal. Try to keep the wireless earbuds and the smartphone in the same direction.
FCC Statement
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.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions:
- This device may not cause harmful interference, and
- this device must accept any interference received, including interference that may cause undesired operation.
RF warning statement:
The device has been evaluated to meet general RF exposure requirement. The
device can be used in portable exposure condition without restriction.