FCC ID: 2AN4C-233621HUSH HUSH ANC EVT

What's In The Box Light Indicators Headphone x1 User guide x 1 Type-C charging cable x1 Right Earmuff Button /

Interface Position Power Button Touch Pad Function Button H U S H QUICK START GUIDE Type-C Port Power on / off: white light turns off after 1 second No device connected after booting:

white light flashes quickly During Bluetooth pairing: red and white lights flash fast Bluetooth is connected: white light flashes slowly Low battery: red light flashes quickly Charging (0-99%): the red light is always on Charging completed: white light is always on Power On / Power Off Power On: In the off state, press and hold the power button for 2 seconds to power on, the white indicator light flashes. Power Off: In the power-on state, press and hold the power button for 2 seconds to power off, the indicator light will go out. Pairing 1.Pair and connect for the first time When the headphone is off,Press and hold the power button for 2 seconds and the voice prompt "Power on"

will be displayed. The red and white lights flash alternately, which means that the pairing state is entered. and you will hear a voice prompt Looking for device. Turn on the Bluetooth on the phone and nd

"233621 Hush" to connect. 2.Turn on to reconnect When the headphone is off, press and hold the power button for 2 seconds and the voice prompt "Power on"

is accompanied by a white light flashing. And the headphone will automatically reconnect to the last device. 3.Re-pair When the headphone is on, press the power button for more than 5 seconds, the red and white flash, enter the pairing state, and the red and white lights flash with the prompt tone. Turn on bluetooth on the phone to connect. 4.Disconnect and reconnect the Bluetooth Manually disconnect and reconnect:

a. The mobile phone end actively disconnects Bluetooth, the headset enters the connectable state, 15 minutes If there is no mobile phone connection in the clock, it will automatically shut down;

b. The headset end actively disconnects Bluetooth, the headset enters the pairing state, if there is no mobile phone connection within 5 minutes, then exit the pairing state and enter the connectable state,If there is no mobile phone connection within 10 minutes, it will shut down. Note: Press twice the power button to achieve Bluetooth disconnection and pairable mode. Bluetooth connection when out of range. a. The headphone which was out of the Bluetooth range will automatically reconnect if it is back in the range, within 10 minutes of disconnection. b. After 10 minutes, the Bluetooth will have to be manually reconnected. c. After 20 minutes of disconnection outside the Bluetooth range, the headphone will power off. Noise Cancellation Mode And Ambient Modes Press and hold 2 seconds Cycle through Noise Cancellation Mode with Ambient Mode ON or 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 headphone. Right Earmuff Touch Function Function Play Pause Right earmuff Specic operation method Press the touch panel twice Previous song Press the touch panel once Next song Press the touch panel thrice Answer / hang up Press the touch panel twice Reject Long press touch panel Volume+

Volume-

Press the function button button twice Press the function button button once Press and hold the function button button for 2 seconds Music Call Volume Voice assistant Open Noise cancellation Ambient sound Open/Close Touch and hold for 2 seconds Charging 1. When the power is less than 10%, the red light flashes quickly and there is plugged sound "Battery is low". 2. When plugged in the charging cable to charge, the red indicator light is on. 3. After fully charged, the indicator light turns solid white. Notice:

A. Charge the headphone via computer or certied charger

(output 5v/1A), the headphone will be fully charged in 2 hours. B. If the headphone is automatically turned off due to insufcient power, charge the headphone on time. If the headphone is not charged. Voice Prompts Power on: Power on. Power off: Power off. Pairing successful: Audio connected. Connection failure: Audio disconnected. Bluetooth pairing: Looking for device. Pairing failure: Device not found. Low battery: Battery low(<10%). Noise cancellation on: Noise cancellation on. Ambient on: Ambient on Noise cancellation, Ambient mode are off: off. Sound Max: Beep,Beep. Call Function 1. When calling the call. Press the right earmuff touch panel twice to answer Press the right earmuff touch panel twice again to hang up the phone. 2. When the call is active Press the right earmuff touch panel twice to hang up Press the Function button button once / twice to adjust the phone. the volume. 3. Call switching Press the right earmuff touch panel twice to hold the current call and connect with the incoming call. Long press the right earmuff touch panel once to continue the current call and reject the incoming call. While the call is in progress, press the right earmuff touch panel twice to hang up the ongoing call. Notice:

Some of the mobile phone brands and models may differ in operation. For queries contact sales for support. 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. IMPORTANT!

The operation of switches on your hi- 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. 2020 Shenzhen Grandsun Electronics Co., Ltd. Listen To Music 1. When music is paused Press the right earmuff touch panel twice to play the music. 2. When music is playing Press the right earmuff touch panel twice to pause the music. the volume. the volume. Press the Function button button twice to turn up Press the Function button button once to turn down Press the right earmuff touch panel three times to switch to the next song. Press the right earmuff touch panel once to switch to the previous song. 3.When there is an incoming call during music playback Music pauses automatically. Press the right earmuff touch panel twice to answer the call. Press the right earmuff touch panel again to hang up the phone and the music continues to play. Notice:

Keep the headphone and the phone within the allowable range, preferably without obstacles. Otherwise the call and music playback quality may be affected or may disconnect. Restore Factory Settings When the headphone is on, press and hold the right earmuff touch panel and power button for 5 seconds at the same time. The red and white lights flash alternately twice, and after 5 cycles of flashing, the indicator goes off. That is to clear the pairing record and restore the factory settings. The previously connected phone needs to be re-paired to use. Specifications Type: 233621 Hush Speaker size: 40mm NdFeB speaker Audio decoding: SBC Frequency response range: 20-20kHz (Bluetooth) Connection method: Type-C charging cable Support mode:

BT 5.0, HSP v1.2, HFP v1.6, A2DP v1.2, AVRCP v1.4 Bluetooth frequency: 2.402-2.480GHz Bluetooth power: <8.0dBm Battery specifications: Rechargeable polymer lithium ion battery 1200 mAh Charging time: 2 hours Headphone usage time: 70H (ANC ON) Product weight: 225g 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 eld 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 re 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 0~45. When the environmental temperature is too high or too low, it may cause device malfunction. The battery efciency would be limited when the temperature is lower than 0. 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 re, explosion or other hazards. Informational Note for Customers in U.S.A. Only:

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 Changes or modications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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. Informational Note For Customers In EU Only:

This device has been manufactured by or on behalf of SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Hereby, SHENZHEN GRANDSUN ELECTRONIC 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 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 qualied 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 Ofce, your household waste disposal service or the dealer.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 ELECTRONIC CO., LTD. is under license. 2. 233621 word mark and logos are registered trademarks of SHENZHEN GRANDSUN ELECTRONIC 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:

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 efciency 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

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Shenzhen Grandsun Electronic Co., Ltd. Agent Authorization Company: Shenzhen Grandsun Electronic Co., Ltd. Address: Gaoqiao Industry Zone, Pingdi Town, Longgang District, Shenzhen, China Product Name: HUSH ANC EVT Model Number(s): 233621 Hush Product Description: HUSH ANC EVT We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Name:

Felix Lee Company:

Shenzhen Grandsun Electronic Co., Ltd. Date: 2020-08-14

Shenzhen Grandsun Electronic Co.,Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-08-14 Subject; Request for Confidentiality FCC ID: 2AN4C-233621HUSH To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure External Photos Test Setup Photos Internal Photos User Manual In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

OR For 45 days, pursuant to Public Notice DA 04-1705. For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely Shenzhen Grandsun Electronic Co.,Ltd. Contact person: Felix Lee