233621 ZEN - Earbuds Manual

Packing List

Product Illustration

Choose your ear tips

Ear tips (S/M/L X2)
The size M ear tips are attached to the earbuds in-box.

*Do not plug the earbuds into your ears without installing ear tips, as this may damage your ears

Wear demonstration

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

Rotate and adjust to 45° angle position

Use the touch pad

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

*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

Turn On/Turn Off

Turn On: Take out two earbuds or any one earbud from the charging box.

Turn Off: Put the earbuds back into the charging box.

Pairing

1. Pair and connect for the first time
   1. Take out the earbuds from the charging case;
   2. The LEDs on the earbuds flash red and white alternately, and the earbuds enter pairing mode;

*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 earbud 3 times in a row, and the third press holding for 2 seconds, the LEDs flash red and white alternately.

3. Find "233621® Zen" on the Bluetooth list to pair the first earbud;
   
   
4. After a few seconds, a Bluetooth pairing request pop-up window will appear, press "Pair" to connect the second earbud;
   
   
5. Enjoy your Zen
   

*If the mobile device is not connected in 5 minutes, the earbuds will enter standby mode, you can follow step 2 to re-pair.

Noise Cancellation Mode and Ambient Modes

Cycle through Noise
Cancellation Mode ON,
Ambient Mode ON and
ALL OFF

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

* The earbuds are set to Noise Cancellation Mode when powered ON

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"

Touch function

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 quickly: Battery low when not connected with any device

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

Charging Case LED Behavior

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%

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

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

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.
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, 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 U.S.A. Only:

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 interference 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.

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 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

This symbol is only valid in the European Union.

Trademarks

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.
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.

Product service policy

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:
   1. man-made damage;
   2. exceed the warranty period;
   3. no warranty card and valid invoice (except those can prove the product is under the warranty period);
   4. the warranty card is altered or not complied with the device itself;
   5. the SN label on device is torn off (except those can provide warranty card and efficiency invoice);
   6. accessories damage due to improper use and maintenance;
   7. disassemble or amend the device without manufacturer authority or water and smashing damages;
   8. damages due to force majeure.
3. Service Information

233621 Website:www.233621.com

• 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.
  

The operation of switches on your hi-fi system may cause clicks which at high volume settings may affect your hearing. Therefore, always set the volume control to minimum before switching between different sources.

©2019 Shenzhen Grandsun Electronics Co., Ltd.