2AKFED426Bluetooth Headset

The Art of Utility AB Covered Equipment Certification Attestation Letter 5/8/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2AKFED426 The Art of Utility AB (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Signed: Printed name: Johan Wahlback Title: CEO Company Name: The Art of Utility AB Date: 5/8/2023

The Art of Utility AB * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter 5/8/2023 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2AKFED426 FRN of applicant: 0026055079 Per section 2.911(d)(7) of the FCC rules, The Art of Utility AB (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: DEFUNC USA FCC Registration Number (FRN): 0033751033 Physical U.S. Company Address: 315 N PUENTE ST. SUITE D, BREA, CA 92821 Contact Person: Eric Zi Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Agent Signed (if different from Applicant): Signed: Signed: Printed name: Johan Wahlback Printed name: Eric Zi Title: CEO Title: President Company Name: The Art of Utility AB Company Name: DEFUNC USA Date: 5/8/2023 Date: 5/8/2023

The Art of Utility AB Covered Equipment Certification Attestation Letter 5/8/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2AKFED426 The Art of Utility AB (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Printed name: Johan Wahlback Title: CEO Company Name: The Art of Utility AB Date: 5/8/2023

DATE : 7/13/2023 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint EST Technology Co., Ltd. Address:Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with The Art of Utility AB Address: Upplandsgatan 7, 111 23, Stockholm, Sweden <Signature> Name：Johan Wahlback Title：CEO Applicant Company：The Art of Utility AB

DATE : 7/13/2023 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AKFED426 Product Name: Bluetooth Headset Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:  Schematics  Block diagram  Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature> Name：Johan Wahlback Title：CEO Company：The Art of Utility AB

External Photos M/N: Defunc TRUE LITE External Photos M/N: Defunc TRUE LITE External Photos M/N: Defunc TRUE LITE External Photos M/N: Defunc TRUE LITE

Internal Photos M/N: Defunc TRUE LITE Internal Photos M/N: Defunc TRUE LITE Bluetooth Antenna Internal Photos M/N: Defunc TRUE LITE

FCC ID: 2AKFED426 EST Technology Co., Ltd Report No. ESTE-R2303254 Page 1 of 3 FCC RF EXPOSURE REPORT The Art of Utility AB Bluetooth Headset Model Number: Defunc TRUE LITE FCC ID: 2AKFED426 Applicant: The Art of Utility AB Address: Upplandsgatan 7, 111 23, Stockholm, Sweden Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2303254 Date of Test: Feb. 25,~Mar. 22, 2023 Date of Report: Mar. 23, 2023 FCC ID: 2AKFED426 EST Technology Co., Ltd Report No. ESTE-R2303254 Page 2 of 3 1. Applicable Standards FCC Part 2(Section 2.1093) FCC KDB 447498 D04 Interim General RF Exposure Guidance v01 2. Exposure Evaluation of Portable or Mobile Devices Human exposure to RF emissions from portable devices (47 CFR §2.1093), as defined by the FCC, must be evaluated with respect to the FCC-adopted limits for SAR. Evaluation of mobile devices, as defined by the FCC, may also be performed with respect to SAR limits, but in such cases it is usually simpler and more cost-effective to evaluate compliance with respect to field strength or power density limits. For certain devices that are designed to be used in both mobile and portable configurations similar to those described in 47 CFR §2.1091(d)(4), such as certain desktop phones and wireless modem modules, compliance for mobile configurations is also satisfied when the same device is evaluated for SAR compliance in portable configurations. The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 300 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. FCC ID: 2AKFED426 EST Technology Co., Ltd Report No. ESTE-R2303254 Page 3 of 3 3. Evaluation Results Mode CH Peak output Power （dBm） Antenna Gain (dBi) effective radiated power （dBm） Target power (dBm) Max. Target power (mW) SAR Test Exemption Limit (mW) GFSK 2402 -1.34 1.85 -1.64 -1±1 1.000 2.72 2441 -1.55 1.85 -1.85 -1±1 1.000 2.72 2480 -1.84 1.85 -2.14 -1±1 1.000 2.72 π/4- DQPSK 2402 -0.53 1.85 -0.83 0±1 1.259 2.72 2441 -0.85 1.85 -1.15 0±1 1.259 2.72 2480 -1.10 1.85 -1.40 -1±1 1.000 2.72 BLE 1M 2402 -3.81 1.85 -4.11 -3±1 0.631 2.72 2440 -4.02 1.85 -4.32 -4±1 0.501 2.72 2480 -4.37 1.85 -4.67 -4±1 0.501 2.72 BLE 2M 2402 -3.24 1.85 -3.54 -3±1 0.631 2.72 2440 -3.37 1.85 -3.67 -3±1 0.631 2.72 2480 -3.77 1.85 -4.07 -3±1 0.631 2.72 Note: 1. Limited=3060*(0.5/20)^x, x=-log(60/(3060*√f)). 2. We choose f=2.48GHz (Highest frequency operate at bluetooth) to calculate MPE limit as higher frequency will have lower MPE limits. 3. SAR Test Exclusion Thresholds is 2.72mW for separation distance 5mm. Therefore, SAR test is not required. End of Test Report

FCC ID: 2AKFED426 EST Technology Co., Ltd Report No.ESTE-R2303253 Page 1 of 66 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of The Art of Utility AB Bluetooth Headset Model Number: Defunc TRUE LITE FCC ID: 2AKFED426 Applicant : The Art of Utility AB Address: Upplandsgatan 7, 111 23, Stockholm, Sweden Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2303253 Date of Test: Feb. 25,~Mar. 22, 2023 Date of Report: Mar. 23, 2023 FCC ID: 2AKFED426 EST Technology Co., Ltd Report No.ESTE-R2303253 Page 2 of 66 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION......................................................................................................................... 3 1. GENERAL INFORMATION ................................................................................................................. 5 1.1. Description of Device (EUT) ........................................................................................................... 5 1.2. Antenna Information ........................................................................................................................ 5 1.3. Information of RF Cable .................................................................................................................. 5 2. SUMMARY OF TEST ......................................................................................................................... 6 2.1. Summary of test result ...................................................................................................................... 6 2.2. Test Facilities ................................................................................................................................... 7 2.3. Measurement uncertainty ................................................................................................................. 8 2.4. Assistant equipment used for test ..................................................................................................... 8 2.5. Block Diagram ................................................................................................................................. 8 2.6. Test Mode ......................................................................................................................................... 9 2.7. Power Setting of Test Software ........................................................................................................ 9 2.8. Duty Cycle ...................................................................................................................................... 10 2.9. Channel List ................................................................................................................................... 11 2.10. Test Equipment List ....................................................................................................................... 12 3. 6DB BANDWIDTH .......................................................................................................................... 14 3.1. Limit ............................................................................................................................................... 14 3.2. Test Setup ....................................................................................................................................... 14 3.3. Spectrum Analyzer Setting ............................................................................................................. 14 3.4. Test Procedure ................................................................................................................................ 14 3.5. Test Result ...................................................................................................................................... 14 4. MAXIMUM PEAK OUTPUT POWER ................................................................................................. 15 4.1. Limit ............................................................................................................................................... 15 4.2. Test Setup ....................................................................................................................................... 15 4.3. Spectrum Analyzer Setting ............................................................................................................. 15 4.4. Test Procedure ................................................................................................................................ 15 4.5. Test Result ...................................................................................................................................... 15 5. POWER SPECTRAL DENSITY .......................................................................................................... 16 5.1. Limit ............................................................................................................................................... 16 5.2. Test Setup ....................................................................................................................................... 16 5.3. Spectrum Analyzer Setting ............................................................................................................. 16 5.4. Test Procedure ................................................................................................................................ 16 5.5. Test Result ...................................................................................................................................... 16 6. CONDUCTED BAND EDGE ............................................................................................................. 17 6.1. Limit .........................................................................................................................................…

Text truncated - open the document above for the full version.

2.4GHz 3216 Chip Antenna: RANT3216F245X02 _ Application: WLAN, 802.11b/g, Bluetooth, WLAN, etc... Features SMD, high reliability, ultra Impact, Omni-directional... Part number Information RANT 3216 F 245 X 02 (A) (B) (C) (D) (E) (F) Electrical Specification The specification is defined on EVB. Dimension and Terminal Configuration No. Terminal Name 1 Feeding/GNG 2 GND/Feeding (A)Product Type Chip Antenna (B) Size Code 3.2x1.6mm(±0.2mm) (C) Material High K material (D) Frequency 2.4 ~ 2.5GHz (E) Feeding mode PIFA & Single Feeding (F) Antenna type Type=0X Working Frequency Range 2400 ~2500 MHz Bandwidth 120 MHz (Min.) Peak Gain 1.85 dBi (Typ.) Impedance 50 Ohm Return loss 10 dB ( Min) Polarization Linear Azimuth Beamwidth Omni-directional Operation Temperature(°C) -40 ~85°C Resistance to Soldering Heats 10sec. ( @ 280°C) Termination Ni / Au (Leadless) Dimension (mm) 3.20 ± 0.20 W 1.60 ± 0.20 T 0.45 ± 0.20 咏成國際科技有限公司 電話: 13530576606 RAIN International Technology Co., Ltd. 7 / F, Building F, Zhichuang Park, Tong 'an, Gushu, Shenzhen 2.4GHz 3216 Chip Antenna: RANT3216F245X02 _ Evaluation Board Reference PCB Dimension Antenna Layout Reference Unit :mm Electrical Characteristics Return Loss & Radiation Return Loss Frequency(MHz) S11 (dB) 2400 -10.50 2450 -30.62 2500 -11.47 Radiation 2400MHz 2450MHz 2500MHz Efficiency 82.52% 85.26% 83.01% X Y Z 2400MHz 2450MHz 2500MHz 2.4GHz 3216 Chip Antenna: RANT3216F245X02 _ Taping Specifications Reel and Taping Specification Reel Specification TYPE SIZE A B C D 3216 7” 5K/Reel 9.0±0.5 60±2 13.5±0.5 178±2 Tapping Specification Packaging Type A B W E F G H T ψD P Paper Type 3216 1.90±0.20 3.50±0.20 8.0±0.20 1.75±0.10 3.5±0.05 4.0±0.10 2.0±0.05 0.75±0.10 1.50±0.10 4.0±0.1 2.4GHz 3216 Chip Antenna: RANT3216F245X02 _ Reliability Table Test Item Procedure Requirements Ceramic Type Remark (Reference) Electrical Characterization Fulfill the electrical specification User Spec. Thermal Shock 1. Preconditioning: 50 ± 10°C / 1 hr , then keep for 24 ± 1 hrs at room temp. 2. Initial measure: Spec: refer Initial spec. 3. Rapid change of temperature test: -30°C to +85°C; 100 cycles; 15 minutes at Lower category temperature; 15 minutes at Upper category temperature. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 107 Temperature Cycling 1. Initial measure: Spec: refer Initial spec. 2. 100 Cycles (-30°C to +85°C), Soak Mode=1 (2 Cycle/hours). 3. Measurement at 24 ± 2Hours after test condition. No Visible Damage. Fulfill the electrical specification. JESD22 JA104 High Temperature Exposure 1. Initial measure: Spec: refer Initial spec. 2. Unpowered; 500hours @ T=+85°C. 3. Measurement at 24 ± 2 hours after test. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 108 Low Temperature Storage 1. Initial measure: Spec: refer Initial spec. 2. Unpowered: 500hours @ T= -30°C. 3. Measurement at 24 ± 2 hours after test. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 108 Solderability (SMD Bottom Side) Dipping method: a. Temperature: 235 ± 5°C b. Dipping time: 3 ± 0.5s The solder should cover over 95% of the critical area of bottom side. IEC 60384-21/22 4.10 Soldering Heat Resistance (RSH) Preheating temperature: 150 ± 10°C. Preheating time: 1~2 min. Solder temperature: 260 ± 5°C. Dipping time: 5 ± 0.5s No Visible Damage. IEC 60384-21/22 4.10 Vibration 5g's for 20 min., 12 cycles each of 3 orientations Note: Use 8"X5" PCB .031" thick 7 secure points on, one long side and 2 secure points at corners of opposite sides. Parts mounted within 2" from any secure point. Test from 10-2000 Hz. No Visible Damage. MIL-STD-202 Method 204 Mechanical Shock Three shocks in each direction shall be applied along the three mutually perpendicular axes of the test specimen (18 shocks) Peak value: 1,500g’s Duration: 0.5ms Velocity change: 15.4 ft/s Waveform: Half-sine No Visible Damage. MIL-STD-202 Method 213 Humidity Bias 1. Humidity: 85% R.H., Temperature: 85 ± 2 °C. 2. Time: 500 ± 24 hours. 3. Measurement at 24 ± 2hrs after test condition. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 Method 106 2.4GHz 3216 Chip Antenna: RANT3216F245X02 _ Board Flex (SMD) 1. Mounting method: IR-Reflow. PCB Size (L:100 × W:40 × T:1.6mm) 2. Apply the load in direction of the arrow until bending reaches 2 mm. No Visible Damage. AEC-Q200 005 Adhesion Force of 1.8Kg for 60 seconds. No Visible Damage Magnification of 20X or greater may be employed for inspection of the mechanical integrity of the device body terminals and body/terminal junction. AEC-Q200 006 Physical Dimension Any applicable method using x10 magnification, micrometers, calipers, gauges, contour projectors, or other measuring equipment, capable of determining the actual specimen dimensions. In accordance with specification. JESD22 JB100 Revision History Revision Date Content 1 2019/03/01 New Datasheet 2 2020/02/22 Add 2D radiation characteristic

Conducted Test Radiated Test (30-1000 MHz) Radiated Test (Above 1GHz)