acme Bh420 True Wireless Earbuds User Manual
- June 6, 2024
- acme
Table of Contents
acme Bh420 True Wireless Earbuds User Manual
WARNING: Listening at a high volume for a long time may damage your hearing.
Product overview
- Power (multifunction button)
- Indicator light and MIC
- Speaker
- Charging contacts
- Charging indicator
- Battery status button
- USB Type-C charging port
Before you start using the earphones, you must charge the battery and pair the earphones with a compatible device.
Charging the earphones and charging case
The BH420 charging case has an internal, rechargeable battery that must be fully charged before being used for the first time. It takes about 2 hours to fully charge the battery for the first time. If you do not use the device for a long period of time, please charge it once every 2 months to avoid damage to the battery.
- Put the earphones in the charging case and close the cover to charge. During charging, the indicators will show a steady red colour. When the battery is fully charged, the red light will turn off.
- Use the USB charging cable to charge the charging case. The indicator lights of the charging case are blinking blue when being charged. They will turn off automatically after being fully charged.
Fully charged earphone batteries have the power for up to 5 hours of playback time (15 hours more from the charging case). When the batteries are running out of power, a sound prompt will be heard. This indicates that the earphones need to be charged as soon as possible.
Pairing
Automatic (first time setup) method
-
Power on orremove the two earphonesfrom the charging case and waitfor 3 seconds.
The two earphones will power on and enter to the pairing mode automatically. A fastblinking red/blue LED from left headphone will indicate that the earphones are ready to pair with your device. -
Turn on the Bluetooth function on your device, select BH420 from the list, and pair the earphone.
-
A voice prompt will be heard from the right earphone saying that the earphones are connected.
Manual method
- When both earphones are in an off state, press and hold the power (multifunction) button of both earphones till blue LED indicator is seen. Release right earphone power button, but keep holding left earphone power button until fast-blinking red/ blue LED will be seen.
- Turn on the Bluetooth function on your device, select BH420 from the list, and pair the devices.
- A sound prompt will be heard from the right earphone confirming thatthe earphones are connected .
If no Bluetooth connection is made within 5 minutes, the earphones will turn off automatically.
Basic Use
To switch on, when both earphones are in an off state, press and hold the
power (multifunction) button for 3 seconds for both earphones at the same time
until the blue indicator light comes on.
To switch off, when both earphones are in an on state, press and hold the
power (multifunction) button of one corresponding (left or right) for 3
seconds to power off both earphones until the red indicator light flashes or
just put them back into the charging case.
Automatic reconnection
When both earphones are in an off state, remove them from the charging case at
the same time, and they will reconnect automatically.
Answer a call
When there is an incoming call, press the power (multifunction) button on the
left or right earphone.
Reject a call
Press and hold the power (multifunction) button of the left or right earphone
for 2 seconds.
End a call
To end the call, press power (multifunction) button on the left or right
earphone.
Play/Pause
Double tap the power (multifunction) button to pause/play the song.
Increase/Decrease volume
Press right earbud power button to increase the volume. Press the left earbud
power button to decrease the volume.
Next/Previous song
Press and hold the right earbud power button to change song to next one. Press
and hold the left earbud power button to change song to previous one.
Voice assistant
Triple tap left or right earbud and the smartphone’s assistant will appear.
After prompt sound you can ask any question and the answer will play to the
earphones.
Wearing the earphones
To properly wear the earphones:
- STEP 1. Place the earphones in the ears as shown.
- STEP 2. Slightly rotate the earphone until it gets tight.
LED indications
| No. | Status | Headset Performance |
|---|---|---|
| 1 | Pairing | The indicator light of the left earphone flashes red and blue |
alternately; when successfully connected to the device, the indicator light
keeps lighting blue.
2| Call state| In case of the incoming call, the indicator lights are blinking
blue.
3| Headset charging state| The indicator light of the headset is red when
being charged and will turn off automatically after being fully charged.
4| Charging case
charging state| The indicators blinking blue when being charged and will turn
off automatically after being fully charged.
5| Power on state| If earphones are connected to device, indicator light of
left earphone stays blue.
6| Power off state| The indicator light stays red for 2 seconds and switches
off.
Technical specifications
- Type: in-ear, Bluetooth
- Frequency response: 20-20,000 Hz
- Driver size: 8,2 mm
- Bluetooth version: v5.0 + EDR
- Frequency range: 2.4–2.48 GHz
- Maximal output radio frequency power: 8 dBm / 6,3 mW
- Working distance: up to 10 m
- Power supply: USB Type-C, 5 V DC
- Microphone: built-in
- Battery (charging case): Li-ion, 3.7 V , 450 mAh (1.67 Wh)
- Earphones charging time: up to 1,5 hours
- Charging time of the charging case: up to 2 hours
- Standby time: about 400 hours
- Playback time: up to 5 hours
- Recharging with the charging case: 3 times
- Total weight: 40 g
Troubleshooting
| Faults | Reasons and Solutions |
|---|
The earphones cannot be turned on.
The earphones turn off automatically.
The earphones cannot turn on by picking them up from the charging case.|
Charging case low battery protection. Recharge your earphones and charging
case.
Music is not playing.| Make sure that both devices are paired and connected
and that “Media playback” is enabled in your Bluetooth settings.Try to pair it
again.
Pairing was successful but the device cannot find the right earphone or
reconnect/connect.| Too many pairing records. Delete pairing records (unpair)
and try again. It is possible that you are not able to connect because the
earphones are paired with another nearby device. You will have to disconnect
the other device, or even turn off its Bluetooth function. Now you can try
again to pair or reconnect.
To reset earphones, put them in to the charging box and hold power button of
both earphones for 5 seconds till sound promt will be heard.
The charging case indicator has no light while charging.| DC power supply does
not output power. Check your USB connections and try to charge with a
different charger.
The earphone indicator has no light while charging.| Check the pogo pin
charging points. Place the earphone correctly in the charging case.
Only one earphone is working| Turn off both earphones. Turn on both earphones
again at same time.
Care and maintenance
- Don’t use abrasive cleaning solvents to clean the headset.
- Do not expose the headset to extremely high or low temperature as this will shorten the life of electronic devices, destroy the battery or distort certain plastic parts.
- Don’t dispose of the headset in a fire as it will result in an explosion.
- Don’t expose the headset to contact with sharp objects as this will cause scratches and damage.
- Don’t let the headset fall down onto the floor. The internal circuit might get damaged.
Waste Electrical and Electronic Equipment (WEEE) Symbol
The use of the WEEE symbol indicates that this product may not be treated as household waste. By ensuring this product is disposed of correctly, you will help protect the environment. For more detailed information about the recycling of this product, please contact your local authority, your household waste disposal service provider or the shop where you purchased the product.
EU Declaration
ACC Distribution hereby declares that this equipment is in compliance with the
essential requirements and other relevant provisions of:
“RED 2014/53/EU” Directive;
“RoHS 2015/863/EU” Directive.
The declaration of conformity can be accessed at: https://www.acme.eu
/declarations-conformity
Warranty card
Product:
Product model :
Product purchase date:
Seller name, address:
Failures (date, description, position of the person who accepts the product, first name, last name and signature):
Warranty period
Warranty enters into force starting with the day when the buyer acquires the product from the seller. Warranty period is indicated on the package of the product.
Warranty conditions
The warranty is valid only by providing an original document of the product
acquisition and this warranty sheet, which includes name of the product model,
product purchase date, name and address of the seller.
If it is noticed during the warranty period that the product has faults and
these faults where not caused by any of the reasons when the warranty is not
applied as indicated in the paragraphs below, manufacturer undertakes to
replace the product.
The warranty is not applied to regular testing, maintenance and repair or
replacement of the parts which are worn out naturally.
The warranty is not applied if damage or failures occurred due to the following reasons:
- Inappropriate installation of the product, inappropriate usage and/or operating the product without following the manual, technical requirements and safety standards as provided by the manufacturer, and additionally, inappropriate warehousing, falling from heights as well as hard strikes.
- Corrosion, mud, water and sand.
- Repair works, modifications or cleaning, which were performed by a service not authorised by the manufacturer.
- Usage of the spare parts, software or consumptive materials which do not apply to the product.
- Accidents or events or any other reasons which do not depend on the manufacturer, which includes lightning, water, fire, magnetic field and inappropriate ventilation.
- If the product does not meet standards and specifications of a particular country, in which it was not bought. Any attempt to adjust the product in order to meet technical and safety requirements such as those in the other countries withdraws all the rights to the warranty service.
If no failures are detected in the product, all the expenses in relation to the service are covered by the buyer.
Designed in EU by ACC Distribution
UAB,
Raudondvario pl. 131B, LT-47191, Kaunas, Lithuania
E-mail: [email protected]
Rev. 1.0 Printed in China
