TWS NB2
True Wireless Earbuds with Active Noise Cancellation
Please visit EDIFIER website for the full version user manual: www.edifier.com
EN
■ User guide
Power on/off
• Power on: Power on automatically when the charging case is opened.
• Power off: Power off when placed in the charging case and the case is closed.
Bluetooth connection
• Please ensure the earbuds are in the charging case, open the case and press and hold the pairing
button on the case for 3 seconds, the white and green lights will flash alternately and rapidly;
• Set your mobile phone to search for and connect to this product model, after pairing is successful,
take the earbuds out for use.
Interconnection of the left & right earbuds/restore to factory settings
Please ensure the earbuds are in the charging case, open the case and double click the pairing button on
the case, wait until the white and green lights flash alternately, then the earbuds have been restored to
factory settings and the left & right earbuds have been interconnected successfully.
Input: 5V 60mA (Earbuds) 5V 1A (Charging case)
Charging indicator
Charging port
Press and hold for 3 seconds: Bluetooth pairing
Double click: interconnection of the Left & right
earbuds
Operation description
Note:
• After the earbuds are powered on and worn into the ears, the noise cancellation mode will be
automatically enabled.
• When playing music: removing the earbud can pause playing and wearing again can resume playing.
• For noise cancellation switching: there are noise cancellation mode (when both earbuds are used),
ambient sound mode, and normal mode.
• To enable noise cancellation mode when using one earbud only, you can close the automatic in-ear
detection via the app.
Double click: accept/end a call
Double click: noise cancellation switching
Triple click: turn on/off game mode
Double click: accept/end a call
Double click: pause/play
Triple click: next track
Tap zone
■ FAQs
No sound
• Check if the earbuds are operating.
• Check if the earbuds volume are at an appropriate level.
• Check if the earbuds are correctly connected with mobile phone.
• Check if the earbuds are operating within a normal working range.
The call quality of the earbuds are not good.
• Check if mobile phone is in an area with strong signal.
• Please ensure the earbuds are within effective distance (10m) and no obstacle between the earbuds
and mobile phone.
When playing music, cannot control pause/play/next track via the earbuds.
• Please ensure the paired device support AVRCP (Audio/Video Remote Control Profile) profile.
■ Maintenance
• Do not use fast charger to charge the product to avoid affecting batteries’ service lives.
• If not used for long periods of time, please charge the product with lithium battery at least once per
three months.
• Keep the product away from humid places to avoid affecting internal circuit.
• Do not use the product during intense exercise or with much sweat to prevent sweat from dropping
into the product to make damage.
• Do not put the product in places exposed to sun or with high temperature. High temperature will
shorten service life of electronic components, damage battery and make plastic components
deformed.
• Do not put the product in cold places to avoid damaging internal circuit board.
• Do not dismantle the product. Non-professional personnel may damage the product.
• Do not drop, strongly vibrate, strike the product with hard object to avoid damaging internal circuit.
• Do not use drastic chemicals or cleaner to clean the product.
• Do not use sharp objects to scratch product surface to avoid damaging shell and affecting facade.
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• "To prevent possible hearing damage, do not listen at high volume levels for long periods."
• "Fully understand user manual before use."
• "Ensure your player at low volume levels or power off before you leaving."
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Correct Disposal of this product. This marking indicates that this product should not be disposed with
other household disposal, recycle it responsibly to promote the sustainable reuse of material resources.
To return your used device, please use the return and collection systems or contact the retailer where the
product was purchased. They can take this product for environmental safe recycling.
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WARNING!
• Danger of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent
type.
• A warning that batteries (battery pack or batteries installed) shall not be exposed to excessive heat
such as sunshine, fire or the like.
• Never disassemble, hit with force, squeeze batteries or dispose of batteries in fire.
• Do not expose batteries in conductive materials, liquid, fire or heat.
• Do not let metal object contact two battery poles. If the battery looks swollen, leaking, discolored,
having odor or any abnormal appearance, stop using it.
• Do not use the battery after immersed in water.
• Improper use of battery may lead to explosion or leakage, causing skin burn or other injuries; in the
event of battery leakage, handle it with care and immediately dispose of the battery in the manner in
compliance with applicable laws and regulations in your locality.
• The battery subjected to extremely low air pressure that may result in an explosion or the leakage of
flammable liquid or gas
Warning!
• Please read the manual carefully. Keep it in safe place for future reference.
• Use the product properly by following the instructions in the manual.
• Using the product in a 0-35℃ environment is recommended.
• Supervise children under 14 when using the product, the product is not a toy.
• To reduce the risk of fire and electric shock, do not expose the product to rain or moisture.
• Do not use the product near any heat source (e.g. radiator, heater, stove, or other devices that
generate heat).
• Consult local staff before using the product near medical or industrial equipment or on board an
aircraft.
• Never use strong acid, alkali, gasoline, alcohol, or other chemical solvents to clean the product
surface. Use only neutral solvent or clear water for cleaning.
• To prevent possible hearing damage, do not listen at high volume level for long periods. Therefore,
always set the volume to an appropriate level.
• For traffic safety, do not use the product while driving, cycling or crossing a road.
FCC statement:
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.
IC statement: CAN ICES-3(B)/NMB-3(B).
FCC Regulatory Compliance
Warning: changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
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.
RF Exposure Compliance
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
Déclaration FCC:
Cet appareil est conforme à la partie 15 des règles FCC. Son utilisation est soumise aux deux conditions
suivantes:
(1) cet appareil ne doit pas causer d'interférences nuisibles, et (2) cet appareil doit accepter toute
interférence reçue, y compris les interférences susceptibles de provoquer un fonctionnement indésirable.
Déclaration IC: CAN ICES-3(B)/NMB-3(B).
ISED Regulatory compliance
This device contains licence-exempt transmitters that comply with Innovation, Science and Economic
Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:
This device may not cause interference.
This device must accept any interference, including interference that may cause undesired operation of
the device.
This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled
environment.
L’émetteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation,
Sciences et Développement économique Canada applicables aux appareils radio exempts de licence.
L’exploitation est autorisée aux deux conditions suivantes :
L’appareil ne doit pas produire de brouillage;
L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en
compromettre le fonctionnement.
Cet équipement est conforme aux limites d'exposition aux radiations IC CNR-102 établies pour un
environnement non contrôlé.
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