233621 ZEN II - True Wireless EarBuds Manual
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233621 ZEN II - True Wireless EarBuds Manual

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Contents
233621 ZEN II - True Wireless EarBuds Manual

PACKING LIST

Choose appropriate earplugs (xs/s/m/l/xl) according to the wearing comfort The size M ear tips are attached to the earbuds in-box.

  1. Do not plug the earbuds into your ears without installing ear tips, as this may damage your ears.
  2. Earplugs and earbuds should be cleaned irregularly.

PRODUCT ILLUSTRATION

PRODUCT ILLUSTRATION

USE THE TOUCH PAD

Use touch pad to control Music Play / Pause, Pick/ Hang up / Reject call, Noise Cancellation on, Ambient on, and activate the Mobile phone's System voice assistant for conversation.

  1. To avoid hurting your ears, please do not apply excessive pressure on the touch pad with your fingers (touch pad lightly);
  2. To avoid damaging the touch pad, please do not click on it with any sharp objects.

TURN ON/TURN OFF

The earbuds in the charging box, open the cover of the charging box or the earbuds out of the box, and the earbuds will automatically turn on. In the power on state, put the earbuds into the charging box or close the cover of the charging box.

PAIRING

Pair and connect for the first time(The isolating film on the left and right earbuds needs to be removed )

  1. Turn on after opening the cover, and take out the earbuds from the charging case, it will automatically turn on.
  2. The LEDs on the earbuds flash red and blue alternately, and the earbuds enter pairing mode.

Note:

  1. For the earbuds that are not paired for the first time, when connecting a new mobile phone, you need to press and hold the charging box key for 3 seconds to release, and the earbuds, enters the pairing mode, the LEDs flash red and blue alternately.
  2. In the status of wearing connection, briefly press the earbuds touch pad for 5 times, the earbuds, enters the pairing mode, and the LED flashes red and blue alternately.
  1. Find "233621 ZEN II" on the Bluetooth list to pair the first earbud;
  2. Pairing completed, enjoy music

Bluetooth remote disconnection and reconnect

  1. If the earbuds are disconnected with the mobile phone and return to the effective connection range within 10 minutes, Bluetooth will automatically reconnect.
  2. If the earbuds are disconnected with the mobile phone and return to the effective range within 10-20 minutes, Bluetooth needs to be reconnected manually.

Turn on to reconnect
In the charging box state: open the cover of the charging box or operate the earbuds out of the box. earbuds without connection records will automatically enter the pairing mode after power on; When the earbuds with connection record is powered on and connected to the last connected Bluetooth device, the connection timeout of 20 seconds will automatically enter the pairing mode; The LEDs can be changed into red light and blue light flashing alternately.

Restore Factory Settings
When the earbuds are in the charging box and the cover is opened, long press the charging box button for 8 seconds to enter the pairing mode, and the red and blue lights flash alternately, that is, clear the pairing record and restore the factory settings. Previously connected mobile phones need to be repaired before they can be used.

WEAR DEMONSTRATION

After putting the earbuds into the ear, rotate and adjust the earplugs to the right depth and angle to fit the ear canal (as shown below)

NOISE CANCELLATION MODE AND AMBIENT MODES

NOISE CANCELLATION MODE AND AMBIENT MODES
Ambient Mode ON /Noise Cancellation Mode ON

Note: The earbuds are set to Noise Cancellation Mode when powered ON.

Noise Cancellation Mode: Our noise canceling technology and optimized passive isolation can suppress wide-band ambient noise
Ambient Mode: Allows you to hear sounds around you even while wearing the earbuds

CHARGE

  1. When the earbud power is lower than 5%, it will prompt "low power".
    Put the earbud into the charging box, and the red light of the indicator flashes, that is, it is charging;
  2. When inserting the type-C line for charging, the blue light of the charging box will be on for 5 seconds, and the red light will be on for a long time;
  3. Fully charged, the blue light of the charging box lights up for 5 seconds;
  4. When charging, the red light of the charging box is on for a long time.

TOUCH FUNCTION

Functions Left earbud Right earbud
Operations Operations
Music Play Tap once/Put on Tap once/Put on
Pause Tap once /Remove Tap once /Remove
Previous song Tap 3 times left / right touch pad
Next song Tap twice left / right touch pad
voice assistant Activate Tap twice and the second Tap hold for 2s

Noise cancellation/

Ambient

 on Press and hold for 2S
Call/ third party call Incoming call
  1. Tap twice, pick UP call
  2. Tap twice again, Hang Up call
  3. Press and hold, Reject Call
During a call Tap twice, Hang Up call
There is a new call during the call
  1. Tap twice to keep the current call and connect a new call.
  2. Press and hold to continue the current call and reject the new call.
  3. While holding the call, Tap twice to hang up the current caller.
  4. While holding the call, Press and hold to switch between two calls.

Note: due to the differences in mobile phone brand and system, there may be subtle differences in operation. Users can contact our after-sales service if have questions.

LED BEHAVIOR

Earbud LED Behavior

  1. When the earbuds are charged in the charging box, the red light flashes once every 3 seconds;
  2. When the earbuds are enter pairing in the charging box, red and blue flashes alternately;
  3. When the earbuds are fully charged, the red and blue lights are off;
  4. Restore factory settings, red and blue lights flashes alternately.

CHARGING CASE LED BEHAVIOR

Being Charged

  1. Insert USB, the blue light will be on for 5 seconds, and the red light will be on for a long time;
  2. When fully charged, the blue light turns on and turns off after 5 seconds;
  3. When charging, the red light stays on.

Not being charged (Open / Close the top cover of the charging case or press the function button)

  1. The battery power is 70% - 100%, and the red light flashes once;
  2. The battery power is 30% - 70%, and the red light flashes twice;
  3. The battery power is 1% - 30%, and the red light flashes 3 times;
  4. The charging box is low (does not charge the earbuds), and the red light flashes 3 times.

SPECIFICATIONS

Model: ZEN II
Bluetooth chip: QCC5141
Bluetooth version: BT 5.2
Speaker size: Φ 10mm 32Ω±15% 100±2 dB@1KHz
Audio codec support: SBC Aptx Adaptive
Frequency response range: 20Hz 20KHz
Connections: Type-C
Support mode: HSP1.2/HFP1.7/A2DP1.3/AVRCP1.6
Bluetooth frequency: 2400-2483.5MHz
Battery Specification: rechargeable polymer lithium ion battery (single earbud: 3.7V, 85mAh;
charging box: 3.7V, 500mAh)
Play time: earbuds are fully charged about 7.5 hours (ambient sound on);
When the charging box is fully charged, the earbuds can be charged twice.
Total endurance of 23 hours
Water resistance rating: IPX4(for earbuds only)
Weight: 4.2g (single earbud),42g (both earbuds and case)

FREQUENTLY ASKED QUESTION

  1. Does the earbud not turn on?
    Answer:
    1. check whether the earbud has no power, and charge the earbud in time.
  2. Is the earbud signal unstable?
    Answer:
    1. restart the earbud (put it back into the charging box and pick it up again).
    2. Check the compatibility and call quality of the mobile phone.
    3. Confirm whether the connected device is too far away from the earbud or there is interference in the surrounding environment.
    4. Do not stay in the environment of signal interference reflection.
  3. Why is the single / dual earbuds suddenly silent during use?
    Answer:
    1. the Bluetooth switch of the mobile phone is touched by mistake and the Bluetooth of the mobile phone is turned off.
    2. Due to the particularity of Bluetooth earbuds, your area is in the environment with strong electromagnetic interference, and it will be silent.
    3. Whether the earbud is set to mute mode.
  4. What if there is an electric current sound in the ear?
    Answer:
    1. if the current sound is obvious, please confirm whether it is caused by environmental interference. It is suggested to use or close the WiFi equipment at another place to reduce interference.
    2. Please try to put the earbud back into the charging box, close the box cover for 5 seconds, open the box cover and reconnect with the phone to confirm whether the current sound disappears or attenuates. Or after hard reset and restart, connect the mobile phone to confirm whether the current sound disappears or attenuates.
    3. If there is a slight bottom noise current sound, it is mainly caused by the interference of wireless signals (such as Bluetooth, WiFi and GPS) in the environment during Bluetooth communication.
  5. What is the difference between the left and right earbud?
    Answer:
    1. there may be problems with the sound source itself. Try to switch to other sound sources.
    2. The earbud accidentally enters water, and the water drops gather on the surface of the horn diaphragm, which may cause the sound to become small. In this case, please place the earbud for a period of time in a ventilated and sufficient sunshine environment to fully remove the water in the earbud.
    3. If the sound outlet of the earbud head is blocked by dirt, the sound will be reduced. In this case, please remove the dirt.
    4. Try to replace the ear tips. The size of the ear tips will also affect the sound perception.
  6. Is there a noise in the earbud when answering the phone?
    Answer:
    1. the Bluetooth connection of the earbud is unstable and there is interference from other Bluetooth devices, Try to clear other paired devices.
    2. When the earbud is far away from the mobile phone, or when there is a shield between the earbud and the mobile phone, the Bluetooth communication quality will be poor and noise may be generated. Move the mobile phone close to the earbud and remove the shield.
    3. The environmental electromagnetic interference is large, which affects the communication between the earbud and the mobile phone, and may cause the noise of the call.
  7. What if the earbud cannot be charged?
    Answer:
    1. the earbud and charging box have not been used for a long time, resulting in the power consumption.
    2. The contact of earbud or charging box is dirty, resulting in poor contact.
    3. The charging cable or charging connector is damaged and cannot be charged.
    4. The earbud charging function fails.
  8. Is the earbud voice recognition not sensitive?
    Answer:
    1. accent and pronunciation affect the recognition rate.
    2. The noise of the surrounding environment affects the recognition rate.
    3. Speak too fast or too slowly.
    4. The earbud is not properly worn and does not fit the ear well.

Documents / Resources

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