background image

Being Charged

Red light off: Battery Lever 100%

Red light always on: Being Charged

Not being charged

Open / Close the top cover of the 

charging case

Flash white quickly: Battery power 

is more than 30%

Flash red quickly: Battery power is 

less than 30%

Touch function

Charging Case LED Behavior

Functions

Operations

Press twice/Put on
Press twice/Remove

Press and hold 2s

Press twice

Press once

Press once

Press twice

Operations

Press twice/Put on
Press twice/Remove

Press and hold 2s

Press and hold 2s

/

/

/

/

Music

Play

Call

Volume

Voice

Pause

Previous song

Next song

Pick/Hang up call

Reject call

Volume-

Activate voice 

assistant

Press twice and the second press hold for 2s

Left earbud

Right earbud

Before using and operating the device, read and 

follow the precautions below to ensure that the 

equipment performs optimally and avoids 

dangerous or illegal conditions

Voice Prompts

1. Power on: “Power on”

2. Enter pairing mode: “Looking for the device”

3. Pairing timeout: “Device not found”

4. Paring successful: “Beep”

5. Paring failure: “Beep”

6. Low battery: “Battery low” 

≤10%

7. Noise cancellation on: “Noise cancellation on”

8. Ambient on

 “Ambient on”

9. Noise cancellation, Ambient mode are off: “off ”

10. Sound Max / Min

 “Beep””

11. Power off: “Power off”

LED Behavior

Earbud LED Behavior

Flash white quickly: Power on but 

not connected with any device
Flash white slowly: Power on and 

connected with device
Flash red and white quickly: 

Pairing mode

Flash red slowly: Battery low 

when connected with device
Flash red quickly and slowly: 

Charging (the power is less than 30%)
Flash red slowly: Charging (the 

power is more than 30%)

LED off: Battery fully charged

Flash red quickly: Battery low 

when not connected with any device

Specifications

Model: 233621® Zen

Driver: 10mm neodymium dynamic driver

Audio CODEC support: SBC, AAC, aptX

Frequency response range: 20 - 20,000Hz

Connections: USB-C cable for case charging

Battery charging: A 10-minute charge delivers up to 

1-hour playback; less than 2 hours for a full charge 

(when charging unit via USB-C cable and charging case)

Playback time: Up to 10 hours, total 22 hours with 

charging case

Support: BT 5.0, A2DP v1.3, AVRCP v1.6, HFP v1.7, HSP v1.2

Bluetooth transmission frequency range: 2.402-2.480GHz

Bluetooth transmission power: <8.0dBm

Battery parameters: Single earbud: 3.7V, 85mAh

Charging case: 3.7V,500mAh

Water resistance rating: IPX4 (for earbuds only) 

Weight: 6.6g (single earbud),53.6g (both earbuds 

and case)

Regulatory Information

Informational Note for Customers 

in U.S.A. Only:

Product service policy

2. Keep the volume within the allowable range to avoid 

    hearing damage. Prolonged exposure to high volume 

    might result in permanent hearing damage.

3. Exposure to high volume while driving may distract 

    attention and cause an accident.

4. Do not cover, seal or put other items on the device.

5. Keep the device away from heat sources or bare fire 

    like electric heaters, microwave ovens, stoves, water 

    heaters, candles or any place with high 

    temperature conditions.

6. Do not use an external heating appliance such as a 

    hair dryer or microwave to dry the device.

7. Avoid striking the device and its accessories to a hard 

    object or vice versa as it may lead the battery to 

     explode or might cause malfunction.

8. Wipe the device with a clean, dry, soft cloth. Do Not 

    use the device before cleaning and maintenance.

9. Use and store the device and its accessories in the 

    temperature range of 5°~35°. When the environmental 

    temperature is too high or too low, it may cause device 

    malfunction. The battery efficiency would be limited 

    when the temperature is lower than 5°.

10. Keep the device and its accessories in a ventilated 

       and cool environment without exposing it to direct sunlight.

11. This device is not a toy and children may use this 

       device under adult supervision. This device and its 

       accessories may contain small parts that should 

       keep away from children. Children may inadvertently

       damage the device and its accessories, or swallow 

       small parts resulting in suffocation or other hazards.

12. The device is equipped with non-removable built-in 

       rechargeable battery. Do Not replace the battery by 

       yourself. The battery can only be replaced by 

       authorized service center.

13. Do not disassemble or modify the device and 

       accessories without permission, otherwise the device 

       and accessories will not be covered under warranty, 

       please contact the authorized service center when 

       the device malfunction is detected.

14. Do not dispose this device and its accessories as 

       ordinary household waste. Comply with the local 

       laws and regulations dealing with this device and its 

       accessories and support recycling.

15. In medical and health care facilities where the use of 

       wireless devices is prohibited, comply with the 

       regulations of such facilities and turn off the device.

16. Radio waves generated by devices may affect the 

       normal operation of implantable medical devices or 

       personal medical devices, such as pacemakers, 

1. Do not use this device in dusty, humid, dirty 

    environment or places near magnetic field to avoid 

    malfunction of the internal circuit of the device.

3. “233621” word mark and logos are registered 
     trademarks of Shenzhen Grandsun Electronics 
     Co., Ltd. Reproduction in whole or in part without 
     written permission is prohibited. Other companies 
     and products mentioned herein are trademarks of 
     their respective owners.
     Made in China. 

1. The device warranty period is 12 months from the    

    date of purchase. Repair and maintenance service 

    are free during the warranty period, excluding 

    malfunctions are man-made.

2. The limited warranty shall not apply to:
    a. man-made damage; 
    b. exceed the warranty period; 

    c. no warranty card and valid invoice (except those 
    can prove the product is under the warranty period);

    d. the warranty card is altered or not complied with 
    the device itself;

    e. the SN label on device is torn off (except those can 
    provide warranty card and efficiency invoice); 

    f. accessories damage due to improper use 
    and maintenance;
    g. disassemble or amend the device without 
    manufacturer authority or water and smashing damages; 
    h. damages due to force majeure.
3. Service Information
    233621 Website:www.233621.com

1. You are cautioned that any changes or 

modifications 

    not expressly approved in this manual could void your 

    authority to operate this device.

2. 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 

    (2) this device must accept any in

terference received, 

    including interference that may cause undesired operation.

3. This device 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 device 

     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 device does cause 

     harmful interference to radio or television reception, 

     which can be determined by turning the device off 

     and on, the user is encouraged to try to correct the 

     interference by one or more of the following measures: 

    (1) Reorient or relocate the receiving antenna. 

    (2) Increase the separation between the device 

    and receiver. 

    (3) Connect the device into an outlet on a circuit 

    different from that to which the receiver is connected. 

    (4) Consult the dealer or an experienced radio/TV 

    technician for help.

4. This device must not be co-located or operated in 

    conjunction with any other antenna or transmitter.

       cochlear implants, hearing aids, etc. If you use any 

       of these medical devices, consult their manufacturer 

       about the use restrictions of the device.

17. Keep the device at least 15cm away from the 

       implanted medical device such as pacemaker, 

       cochlear implants etc.

18. Use of unauthorized or incompatible power supplies, 

       chargers or batteries may cause fire, explosion or 

       other hazards. 

 

Informational Note for Customers 

in EU Only:

This device has been manufactured by or on behalf of 

Shenzhen Grandsun Electronics Co., Ltd. Hereby, 

Shenzhen Grandsun Electronics Co., Ltd. declares that 

this device is in compliance with Directive 2014/53/EU.

This symbol on the device, the battery or on 

the packaging indicates that the device and 

the battery shall not be treated as household 

waste. By ensuring these devices and 

batteries are disposed of correctly, you will 

help prevent potentially negative 

consequences for the environment and

human health which could otherwise be caused by 

inappropriate waste handling. The recycling of the 

materials will help to conserve natural resources. In 

case of devices that for safety, performance or data 

integrity reasons require a permanent connection 

with an incorporated battery, this battery should be 

replaced by qualified service staff only. To ensure that 

the battery and the electrical and electronic device 

will be treated properly, hand over these devices at 

end-of-life to the applicable collection point for the 

recycling of electrical and electronic device. Hand the 

battery over to the applicable collection point for the 

recycling of waste batteries. For more detailed 

information about recycling of this device or battery, 

please contact your local Civic Office, your household 

waste disposal service or the dealer.

This symbol is only valid in the European Union.

1. The Bluetooth® word mark and logos are registered

     trademarks owned by Bluetooth SIG. Inc. And any use

     of such marks by Shenzhen Grandsun Electronics 
     Co., Ltd. is under license.
2. Qualcomm aptX is a product of Qualcomm 
     Technologies International, Ltd. Qualcomm is a 
     trademark of Qualcomm Incorporated, registered in 
     the United States and other countries, used with 
     permission. aptX is a trademark of Qualcomm 
     Technologies International, Ltd., registered in the 
     United States and other countries, used with permission.

Trademarks

Содержание ZEN

Страница 1: ...QUICK START GUIDE ZEN ...

Страница 2: ...Charging cable USB C to USB A x1 Ear tips Touch pad Earbuds LED indicator ChargingcaseLEDindicator USB C Connector x2 Earphone x1 Charging Case x1 Packing List Product Illustration User Guide x1 ...

Страница 3: ...n On Take out two earbuds or any one earbud from the charging box Turn Off Put the earbuds back into the charging box To avoid hurting your ears please do not apply excessive pressure on the touch pad with your fingers touch pad lightly To avoid damaging the touch pad please do not click on it with any sharp objects Wear demonstration After putting the earbuds into the ear rotate and adjust the ear...

Страница 4: ...e x3 00 02 After a few seconds a Bluetooth pairing request pop up window will appear press Pair to connect the second earbud Enjoy your Zen Find 233621 Zen on the Bluetooth list to pair the first earbud on Bluetooth Bluetooth Bluetooth 233621 Zen Bluetooth 233621 Zen pair For the earbuds that are not paired for the first time when connecting a new mobile phone you need to touch the pad for any earbu...

Страница 5: ...connection and reconnect 3 Turn on to reconnect Remove both earbuds from the charging case Put both earbuds into Bluetooth pairing mode Press and hold the touch pad until the LEDs on the earbuds flash red 3 times Return the earbuds to the charging case and leave them there for 10 seconds The pairing record is now cleared After clearing the pairing record of the earbuds the earbuds will enter the p...

Страница 6: ... Device not found 4 Paring successful Beep 5 Paring failure Beep 6 Low battery Battery low 10 7 Noise cancellation on Noise cancellation on 8 Ambient on Ambient on 9 Noise cancellation Ambient mode are off off 10 Sound Max Min Beep 11 Power off Power off LED Behavior Earbud LED Behavior Flash white quickly Power on but not connected with any device Flash white slowly Power on and connected with de...

Страница 7: ...ange 20 20 000Hz Connections USB C cable for case charging Battery charging A 10 minute charge delivers up to 1 hour playback less than 2 hours for a full charge when charging unit via USB C cable and charging case Playback time Up to 10 hours total 22 hours with charging case Support BT 5 0 A2DP v1 3 AVRCP v1 6 HFP v1 7 HSP v1 2 Bluetooth transmission frequency range 2 402 2 480GHz Bluetooth tran...

Страница 8: ...entilated and cool environment without exposing it to directsunlight 11 This device is not a toy and children may use this device under adult supervision This device and its accessories may contain small parts that should keep away from children Children may inadvertently damage the device and its accessories or swallow small parts resulting in suffocation or other hazards 12 The device is equippe...

Страница 9: ...ations However there is no guarantee that interference will not occur in a particular installation If this device does cause harmful interference to radio or television reception which can be determined by turning the device off and on the user is encouraged to try to correct the interference by one or more of the following measures 1 Reorient or relocate the receiving antenna 2 Increase the separ...

Страница 10: ...fied service staff only To ensure that the battery and the electrical and electronic device will be treated properly hand over these devices at end of life to the applicable collection point for the recycling of electrical and electronic device Hand the battery over to the applicable collection point for the recycling of waste batteries For more detailed information about recycling of this device or...

Страница 11: ... excluding malfunctions are man made 2 The limited warranty shall not apply to a man made damage b exceed the warranty period c no warranty card and valid invoice except those can prove the product is under the warranty period d the warranty card is altered or not complied with the device itself e the SN label on device is torn off except those can provide warranty card and efficiency invoice f acc...

Страница 12: ...rces WARNING To guarantee your personal safety please ensure that these earbuds are not worn kept in the immediate vicinity close than 15 cm of a pacemaker Do not insert jack plug into electric sockets Supervise children when using the device the product is not a toy Earbuds listening at high volume levels particularly over extended periods of time may damage your hearing 2019 Shenzhen Grandsun El...

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