FCC ID: 2AO4I-BST1 Bluetooth Headphones

Instructions Directory overview Charging and battery life Pairing and reset In-ear detective Touch control Packing list Critical safety note overview L&R earphone Reset and pair keys Type C Charging jack LED Light overview Noise-canceling microphone Ear wing Ear plug Wearable detection window Touch control area Talking microphone Charge shock Check charging and battery life Charge with the battery pack provided with a pair of charging cables before the first use. Charging state 1. 2. 3. When the battery in the charging case is not fully charged, the LED light is orange. When the battery is charged, the LED light is green. After the charging cable is removed, the LED light is turned off. Battery life is less than 25% and LED lighting Battery life status of the charger When you turn on the charger. 1. remains red for 3s 2. remains red for 3s 3. Battery life exceeds 50% and LED lighting stays green for 3s Battery life is less than 25% and LED lighting Note:

Dry the USB port completely before charging. Type C Charge Port LED Light Touch control and wear detection Touch control Single touch ------ Pause/play/answer/hang up a call Double click -----------------------The last song Tribal Contact ---------------- The next song Touch 2s-------------------------ANC On/Off Touch 5s and release ----- to turn on bone conduction Sensor 1 Touch Area Wearable detection Remove the headphones ------ automatically stops the music Put on your headphones ------ and music will play automatically Note:

1. When music is playing 2. Play music before you take off your headphones. Otherwise, the system tone will be played. Pair and reset headphones Pairing and joining 1. Turn on the charger and leave the earplugs. 2. Long press the Reset and pairing keys for 3 seconds, and the LED flashes white 3. Open the Bluetooth Settings on your device, find the demo you can listen to, and select Optional connection. 4. Put on our headphones and start using them. The wire is broken 1. LL&R earpho ne Put the earphones back in the charging case and charge themselves The wire is broken reconnect It will reconnect automatically. Resetting Reset and pair keys 1. Turn on the charger and leave the earplugs. 2. Reset and hold the pairing button for 10 seconds. The LED is white/red Flicker to color 3. Close the charger to complete the reset LED Light LED Light Accessories and product specifications earrest Size: Small curly braces Medium size without earplugs eartip Size: Small and Medium sized earplugs Charging cable Centimetre charging cable User manual Product specifications:

Model number :BST Earbuds 1 Speaker impedance :32Q Headset input :5V 150mA Charger input :5V 500mA Charger output power :5V 45mA Bluetooth version :5.2 Working distance :10 meters Bluetooth protocol :BLE/HFP/A2DP/AVRCP Important Safety Instructions 1. The appropriate temperature for products and accessories is - 10~60 , and the charging temperature is -

10~60 . 2. Maximum power within the operating frequency range The equipment operates in frequency band and maximum power (E.I.R.P). 2402MHz2480MHz9.73dBm 2412MHz2472MHz17.83dBm 3. RED EU Compliance XXXX specially declares that XXXX of this equipment complies with the basic requirements of Directive 2014/53/EU and other relevant regulations. For the qualification statement, please visit www.XX.com/certification. 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. NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications or changes to this equipment. Such modifications or changes could void the users 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 warning statement:

The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:

this device may not cause interference, and

(2) this device must accept any interference, including interference that may cause undesired operation of the device. Cet appareil est conforme avec Industrie Canada RSS exemptes de licence standard(s). Son fonctionnement est soumis aux deux conditions suivantes:

(1) cet appareil ne peut pas provoquer d'interfrences, et

(2) cet appareil doit accepter toute interfrence, y compris celles pouvant causer un mauvais fonctionnement de l'appareil. This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numrique de la classe B est conforme la norme NMB-003 du Canada. 43 210 2AO4I-BST1

Label Location On EUT The product is too small to place complete label information, so the label is placed in the user manual.

Bosch Sensortec GmbH Declaration concerning Antenna Specification It is hereby declared that the product Model No.: BST Earbuds 1 FCC ID : 2AO4I-BST1 fulfills the requirement in FCC test relating to the antenna type. The device specified above confirms to the FCC recommendations for internal antenna type(s) described below:

Model No. of antenna: H01 Type of antenna:

Gain of the antenna:

Frequency range: 2400~2480MHZ FPC Antenna

-2.3dBi The mounting of the antenna is fixed to the radio module and no other antenna should be used. Company name:

Address:

City:

ZIP / Postal code:

Country:

Place:

Bosch Sensortec GmbH Gerhard-Kindler-Strasse 9, 72770 Reutlingen, Germany Reutlingen

Germany Reutlingen Date: 3/30/2023 Signature:

version01

Specification Sheet Guoguang H01 BT antenna V1.0 2022.09.05 1 cust roject name aterial class version d ate Directory 1P 2 3M 4 5St assive test report OTA data atching circuit Installation precautions

................................................................................................... 3

.............................................................................................................................. 7

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....................................................................................... 9

............................................................................................................... 10 ructure file Change record field stablishment/

change date Reason for change Ch ange content version 2022.09.05 Initial release Initial release V1.0 2 P assive test report Angilent E5071C BT antenna S11 parameters BT antenna efficiency and gain:

MHz

(dB )

(dBi) 2400 2410 2420 2430 2440 2450 2460 2470 2480 18%

19%

18%

19%

18%

17%

17%

17%

18%

18%

-7.4

-7.2

-7.4

-7.3

-7.5

-7.7

-7.7

-7.8

-7.4

-7.5

-3.0

-2.7

-2.3

-2.4

-2.5

-2.3

-2.5

-2.5

-2.3

-2.5 3 Passive direction diagram

: Theta=90.00deg Phi=90.00deg Phi=0.00deg 4 3D direction diagram OTA data Channel TRP(dBm) TIS(dBm) CH 0 CH 39 CH 78

-0.8 1.1 1.3

-86.4

-87.2

-88.1 OTA Standard Chamber 7 M atching circuit Left ear matching circuit:

Element C24 R9 C23 Value 2.4pF 2.7pF N/A 8 Installation precautions Note:

1. When the two feed points are used, note that the shrapnel at the bottom should be placed in reverse;

2. Pay attention to the amount of glue. 9 10

-Bosch Sensortec GmbH-

Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 U.S. Agent Designation 4/23/23

[Bosch Sensortec GmbH] acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought

(FCC ID: [2AO4I-BST1]):

Name and company of U.S. agent: Robert Bosch LLC Physical U.S. address of agent: 384 Santa Trinita Avenue Sunnyvale, CA 94085 FRN of U.S. agent: 0033684721 Email address of U.S. agent:xiaofeng.tong@us.bosch.com

[Robert Bosch LLC] acknowledges their obligation to accept service of process on behalf of [Bosch Sensortec GmbH].

[Bosch Sensortec GmbH] with the FRN [0027274760] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under 2.911(d)(7). Sincerely, Signature Emma Zhao Manager 4 0 V

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_ 8 4 Bosch Sensortec GmbH Signature Xiaofeng Tong The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB.

-Bosch Sensortec GmbH-

Manager Robert Bosch LLC The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB.

- Bosch Sensortec GmbH -

Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 3/30/23 To whom it may concern:

We, [Bosch Sensortec GmbH], hereby certify that the equipment for which authorization is sought

(FCC ID:

[2AO4I-BST1]) is not covered equipment prohibited from receiving an equipment authorization pursuant to 2.903 of the FCC rules. We also certify that, as of the date of the filing of the application, we are not identified on the Covered List (https://www.fcc.gov/supplychain/coveredlist) as an entity producing covered equipment. By signing this form, we confirm the above and that we are aware of the application requirements listed under 2.911(b) and (d)(5) and (6). Sincerely, 2 0 V

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d n a Signature Reza Torabi Manager Bosch Sensortec GmbH

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_ 2 6 The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01.