FCC ID: 2A4IH-SOUNDTEK SoundTek

Aston Innovations SoundTek Owners Manual Thank you so much for choosing Aston Innovationss products 1. Product Description This is a high quality bluetooth audio receiver/carkits,This one built-in high senstivity microphone and high performance noise isolator, and can be installed in your car or home audio system to achieve high quality bluetooth music playback and bluetooth hands-free function. Just require your car or home audio system have a AUX audio input port. 2. How to Use Plug in USB to any USB port and Aux connector to car AUX IN port The audio input source of car media system switch to AUX IN mode Enable bluetooth and enter bluetooth submenu to searching/add devices on your smartphone The smartphone can find the SoundTek device (device name is SoundTek XX) Click to pairing and connect the SoundTek XX on smart phone Then you can try play music on smart phone.etc. Fine tune volume to get best audio quality, refer to below method 3. How to Get Best Audio Quality Reduce the volume of car media system first , for example volume level 12 Make a handsfree call, and then adjust phone volume to max and press and hold button to adjust volume of SoundTek to max in handsfree call next truck mode Then adjust volume of car media system to right level that you like And then for music play mode, no need adjust the volume of car media system, during music play mode, just adjust volume of phone to right level that you like And for voice assistant mode, no need adjust the volume of car media system, during voice assistant actived mode, just adjust volume of phone to right level that you like Note:

a) The SoundTek already built-in noise isolator module inside, this will be 100%

remove the hum/static/buzzing noise and keep best audio quality b) The audio quality will be reduced if you add an extra ground loop noise isolator, that caused by extra ground loop noise isolator not so good (will cut a lot of low frequency of audio frequency) 4. Buttons Functions Pairing Device Play Music | Voice Assistant Pairing Device Press and hold for 6 seconds to enter bluetooth pairing mode Bluetooth Connection Press to connect paired bluetooth device if its not automaticlly connected Play Music Mode Press to play or pause music Active Voice Assistant Press and hold 1 second to active voice assistant Such as Siri or Google Now etc. Its depend whether the smartphone support this feature Music Play Mode Press to play previous track Press and hold to reduce music volume Voice Assistant Mode Press and hold to reduce volume while voice command actived Music Play Mode Short press to play next track Press and hold to increase music volume Voice Assistant Mode Press and hold to increase volume while voice assistant actived Hands-Free Call Mode Answer/End Call Press to answer an incomming call or end the current call Reject Call Press and hold 1 second to reject an incomming call Transfer Call Press and hold 1 second to transfer current call to phone or bluetooth handsfree Three Way Call Press to answer the new incomming call and end current call Press and hold 1 second to answer the new incomming call and hold current call Hands-Free Call Mode Press and hold to reduce handsfree volume Hands-Free Call Mode Press and hold to increase handsfree volume During bluetooth disconnected mode, Press and hold and buttons for 6 seconds to clear all paired devices and re-entering pairing mode 5. Technical Specifications Parameters Bluetooth version Radio frequency Bluetooth profiles Wireless range Supported audio codecs Audio output level Frequency response Signal to noise ratio(SNR) THD+N ratio Channel Balance Crosstalk Power input Audio output Product size Cable length 6. Whats in the box Specifications 5.1 2.402GHz - 2.480GHz A2DP v1.3 | AVRCP v1.6 | HFP v1.7 33ft or 10m (minimum@outdoor) 1) aptX, aptX HD, aptX Low Latency, AAC,SBC 2) AAC,SBC (for non-aptX model) 1 Vrms 20Hz - 20KHz (+/-0.5dB typ.) 101 dBA typ. 0.0029% (20Hz - 20KHz) typ.

<0.1dB

>80dB USB type A port (DC5V) Golden plated 3.5mm AUX plug 43mm(Diameter) x 11.5mm(Thickness) 1.2m / 3.96ft 1) SoundTek x 1 2) Owers manual x 1 3) Cable clip holder x 5 4) 3M double-sided adhesive pad x 1 (backup) 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. Dear Customer Have a great day Thank you so much for choosing Aston Innovationss products Welcome to write product feedbacks and produt reviews, And welcome to contact us if you need any helps. Thank you so much for recommending this product to your friends and families. Sincerely Aston Innovations FCC Information 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. 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. changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment complies with FCC exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

FCC ID LABELING AND LOCATION FCC ID Label SoundTek Model NO.: SoundTek FCC ID: 2A4IH-SOUNDTEK FCC ID Label Location The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Chongqing Jingdong E-commerce Co., Ltd. C5266091_X10_Ed.2 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2022-02-21 Subject: Request for Confidentiality FCC ID: 2A4IH-SOUNDTEK To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules

(47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info Long-Term Confidentiality Short-Term Confidentiality NOTE 2 No No No No No NOTE 1 NOTE 1 No No No No No No No No NOTE1:LongTermConfidentialitymaybepermittedunderspecialconditions(SeeII.LONGTERMCONFIDENTIALITY,Section3of KDB726920,uselastinforce) NOTE2:ShortTermConfidentialitycanberequestedforamaximumof180daysfromthedateofthegrant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. 1/1 C5266091_X10_Ed.2 Sincerely, Name: YH Tang Date: 2022-02-21 Title: Manager Signature of applicant:

1/1

C5266091_X8_Ed.1 Letter of Authorization Chongqing Jingdong E-commerce Co., Ltd. Company: Chongqing Jingdong E-commerce Co., Ltd. Address: No. 48 Campus Street, Dongcheng Street, Tongliang District, Chongqing Product Name: SoundTek Model Number: SoundTek, SoundTek XX, "XX" means can be replaced by any letter/number/symbol, digit custom FCC Identifier:

2A4IH-SOUNDTEK We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: YH Tang Date: 2022-02-21 Title: Manager Signature of applicant:

1/1

Chongqing Jingdong E-commerce Co., Ltd. Model Difference FCC ID: 2A4IH-SOUNDTEK Model : SoundTek, SoundTek XX, "XX" means can be replaced by any letter/number/symbol, digit custom All the model are the same circuit and RF module, except the model name colour and port. Regards, Clients signature Clients name / title : YH Tang / Manager Contact information / address : No. 48 Campus Street, Dongcheng Street, Tongliang District, Chongqing