2AB4KMETYH1539Bluetooth Speaker

MODEL NO.: PSPS1339_DG “Pro PSP1339” 48.1 cm(W) x 24.4 cm(D) x 19.5 cm(H)

MET INDUSTRIAL LTD Date:2022-7-13 To: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD FCC ID: 2AB4KMETYH1539 To Whom It May Concern: This letter is to ascertain thatMET INDUSTRIAL LTD/Room 605, 6/F., No. 9 Wing Hong Street, Lai Chi Kok, Kowloon, EUT ： Bluetooth Speaker MODEL No.: MET1539, PSP1339, PSP1339_DG, PSP1339XXXXX(where XXXXX denote any printable characters in the ASCII Standard Character Table to represent variances in cosmetics or buyers) Has been the units used for conducting FCC compliance testing, the SDoC part Have be tested by EMTEK (SHENZHEN) CO., LTD. If you have any question or concerns, pls. contact us. Sincerely, Client’s signature： Client’s name / title ： TONY LAM/Manager Contact information / address: MET INDUSTRIAL LTD /Room 605, 6/F., No. 9 Wing Hong Street, Lai Chi Kok, Kowloon,

Rev 11/20/07 MET INDUSTRIAL LTD Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regardingapplication for certification of FCC ID: 2AB4KMETYH1539 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit TypeFile Name Block Diagram, Schematics, Operational Description, Block Diagram, Schematics, Operational Description, The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Client’s name / title ： TONY LAM/Manager Contact information / address: MET INDUSTRIAL LTD /Room 605, 6/F., No. 9 Wing Hong Street, Lai Chi Kok, Kowloon,

MET INDUSTRIAL LTD Declaration on model difference We the undersigned hereby confirm that any of our production units bearing the following model numbers are identical in circuitry and electrical, mechanical and physical construction; only indicates for different market purposes; FCC ID: 2AB4KMETYH1539 Production nameTrade nameModel no. Bluetooth Speaker MET, SYLVANIA, PROSCAN MET1539, PSP1339, PSP1339_DG, PSP1339XXXXX(where XXXXX denote any printable characters in the ASCII Standard Character Table to represent variances in cosmetics or buyers) Confirmed by MET INDUSTRIAL LTD Client’s name / title： TONY LAM/Manager Contact information / address: MET INDUSTRIAL LTD / Room 605, 6/F., No. 9 Wing Hong Street, Lai Chi Kok, Kowloon, Date:2022-7-13

MET INDUSTRIAL LTD Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: 2022-7-13 SUBJECT: FCC Application for FCC ID:2AB4KMETYH1539 To Whom It May Concern: We, the undersigned, hereby authorize Lisa Wang atEMTEK (SHENZHEN) CO., LTD.on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out byEMTEK (SHENZHEN) CO., LTD. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, Client’s name / title ： TONY LAM/Manager Contact information / address: MET INDUSTRIAL LTD /Room 605, 6/F., No. 9 Wing Hong Street, Lai Chi Kok, Kowloon,

EUT EXTERNAL PHOTOGRAPHS Label location ----------------The end---------------- USB point Aux point DC IN POINT, AUX IN POINT

2 CODE-39 S/N: 40 X 8 MM MET1539(PSP1339-DG) label list white letters on Black background 50x25mm MODEL NO.: PSP1339_DG BLUETOOTH SPEAKER FCC ID: 2AB4KMETYH1539 Imported by Curtis International Ltd. POWER SOURCE: INPUT: DC 5V 500mA (Micro USB) BLUETOOTH: BLUETOOTH V2.1+EDR SUPPORT PROFILE A2DP FREQUENCY: FM 87.5-108MHz BUILT-IN RECHARGEABLE LITHIUM BATTERY BC 06/22 L45x13Hmm 40x20mm MANUFACTURED: JUNE 2022 30% SIZE: 1” x 1 ” MODEL NO.: PSP1339-DG BLUETOOTH SPEAKER FCC ID: 2AB4KMETYH1539 Imported by Curtis International Ltd. POWER SOURCE: INPUT: DC 5V 500mA (Micro USB) BLUETOOTH: BLUETOOTH V2.1+EDR SUPPORT PROFILE A2DP FREQUENCY: FM 87.5-108MHz BUILT-IN RECHARGEABLE LITHIUM BATTERY BC 06/22 MANUFACTURED: JUNE 2022 S/N: A2206455400000001 S/N: A2206455400042572 S/N: A2206455400000001

EUT INTERNAL PHOTOGRAPHS ----------------The end---------------- PCB ANT

FCC ID : 2AB4KMETYH1539 RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) Radiation as specified in §1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density(mW/cm 2 ) Average Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500- 100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500- 100000 -- -- 1 30 11.1 Friis transmission formula: Pd= (Pout*G)\ (4*pi*R 2 ) Where Pd= Power density in mW/cm 2 Pout=output power to antenna in mW G= Numeric gain of the antenna relative to isotropic antenna Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE, 1mW/cm 2 ,If we know the maximum gain of the nd total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. RF Exposure Information: The radiated output power of this device meets the limits of FCC/IC radio frequency exposure limits.This device should be operated with a minimum separation distance of 20cm (8 inches) between the equipment and a person's body. 11.2 Measurement Result BT Antenna gain: -0.58 dBi Measured power (dBm) Tune-up power (dBm) Max tune-up power (dBm) Antenna Gain Numeric Evaluation result (mW/cm2 ) Power density Limits (mW/cm2 ) 0.42 0 to 2 2 0.87 0.00028 1

Report No. ENS2206170013W00101R Page 1 of 74 Ver.1.0 TEST REPORT Product Name ： Bluetooth Speaker Model Number ： MET1539, PSP1339, PSP1339_DG, PSP1339XXXXX(where XXXXX denote any printable characters in the ASCII Standard Character Table to represent variances in cosmetics or buyers) FCC ID ： 2AB4KMETYH1539 Prepared for : MET INDUSTRIAL LTD Address : Room 605, 6/F., No. 9 Wing Hong Street, Lai Chi Kok, Kowloon, Hong kong Prepared by : EMTEK (SHENZHEN) CO., LTD. Address : Building 69, Majialong Industry Zone,Nanshan District, Shenzhen, Guangdong, China Tel: (0755) 26954280 Fax: (0755) 26954282 Report Number : ENS2206170013W00101R Date(s) of Tests : June 17, 2022 to July 12, 2022 Date of issue : July 12, 2022 $二维码$ Report No. ENS2206170013W00101R Page 2 of 74 Ver.1.0 Table of Contents 1 TEST RESULT CERTIFICAT I O N .............................................................................................................................3 2 EUT TECHNICAL DESCRIPTION ...........................................................................................................................5 3 SUMMARY OF TEST RESULT ................................................................................................................................6 4 TEST METHODOLOGY ...........................................................................................................................................7 4.1 GENERAL DESCRIPTION OF APPLIED STANDARDS .......................................................................... 7 4.2 MEASUREMENT EQUIPMENT USED ..................................................................................................... 7 4.3 DESCRIPTION OF TEST MODES ............................................................................................................. 8 5 FACILITIES AND ACCREDITATIONS ....................................................................................................................9 5.1 FACILITIES ................................................................................................................................................. 9 5.2 EQUIPMENT ............................................................................................................................................... 9 5.3 LABORATORY ACCREDITATIONS AND LISTINGS .............................................................................. 9 6 TEST SYSTEM UNCERTAINTY ............................................................................................................................10 7 SETUP OF EQUIPMENT UNDER TEST ............................................................................................................... 11 7.1 RADIO FREQUENCY TEST SETUP 1 ..................................................................................................... 11 7.2 RADIO FREQUENCY TEST SETUP 2 ..................................................................................................... 11 7.3 CONDUCTED EMISSION TEST SETUP ................................................................................................. 13 7.4 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ................................................................. 14 7.5 SUPPORT EQUIPMENT ........................................................................................................................... 14 8 FREQUENCY HOPPING SYSTEM REQUIREMENTS ........................................................................................15 8.1 STANDARD APPLICABLE .............................................................................................................................. 15 8.2 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ........................................................................... 15 8.3 EQUAL HOPPING FREQUENCY USE .............................................................................................................. 16 8.4 FREQUENCY HOPPING SYSTEM .................................................................................................................... 16 9 TEST REQUIREMENTS .........................................................................................................................................17 9.1 20DB&99%BANDWIDTH ........................................................................................................................ 17 9.2 CARRIER FREQUENCY SEPARATION .................................................................................................. 30 9.3 NUMBER OF HOPPING FREQUENCIES ............................................................................................... 37 9.4 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ............................................................................. 40 9.5 MAXIMUM PEAK CONDUCTED OUTPUT POWER ............................................................................ 43 9.6 CONDUCTED SUPRIOUS EMISSION .................................................................................................... 49 9.7 RADIATED SPURIOUS EMISSION ......................................................................................................... 57 9.8 CONDUCTED EMISSION TEST .............................................................................................................. 70 9.9 ANTENNA APPLICATION ....................................................................................................................... 73 Report No. ENS2206170013W00101R Page 3 of 74 Ver.1.0 1 TEST RESULT CERTIFICATION Applicant : MET INDUSTRIAL LTD Address : Room 605, 6/F., No. 9 Wing Hong Street, Lai Chi Kok, Kowloon, Hong kong Manufacturer : Dongguan City Wangniudun Yinghui Electronics Factory Address : Chijiaoluduan Zhengzhong Road Wangniudun Town Dongguan City, China EUT : Bluetooth Speaker Model Name : MET1539, PSP1339, PSP1339_DG, PSP1339XXXXX(where XXXXX denote any printable characters in the ASCII Standard Character Table to represent vari…

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Report No. ENS2206170013W00101R Page 41 of 74 Ver.1.0 DH1_Ant1_Hop DH3_Ant1_Hop Report No. ENS2206170013W00101R Page 42 of 74 Ver.1.0 DH5_Ant1_Hop Report No. ENS2206170013W00101R Page 43 of 74 Ver.1.0 9.5 MAXIMUM PEAK CONDUCTED OUTPUT POWER 9.5.1 Applicable Standard According to FCC Part 15.247(b)(1) and KDB 558074 D01 15.247 MEAS GUIDANCE v05r02 According to IC RSS-247.5.4 and RSS-Gen 6.12 9.5.2 Conformance Limit The max For frequency hopping systems operating in the 2400-2483.5 MHz band employing at least 75 non-overlapping hopping channels: 1 watt. For all other frequency hopping systems in the 2400-2483.5 MHz band: 0.125 watts. 9.5.3 Test Configuration Test according to clause 7.1 radio frequency test setup 1 9.5.4 Test Procedure As an alternative to a peak power measurement, compliance with the limit can be based on a measurement of the maximum conducted output power. Use the following spectrum analyzer settings: Set Span = approximately 5 times the 20 dB bandwidth, centered on a hopping channel(about 8MHz) Set RBW > the 20 dB bandwidth of the emission being measured(about 3MHz) Set VBW ≥ RBW Set Sweep = auto Set Detector function = peak Set Trace = max hold Allow the trace to stabilize. Use the marker-to -peak function to set the marker to the peak of the emissionto determine the peak amplitude level. Test Results Temperature: 25 ̊ C Relative Humidity: 45% ATM Pressure: 1011 mbar Note: N/A Test Mode Antenna Freq(MHz) Conducted Peak Powert[dBm] Conducted Limit[dBm] Verdict DH5 Ant1 2402 -1.58 ≤20.97 PASS 2441 -1.29 ≤20.97 PASS 2480 -0.83 ≤20.97 PASS 2DH5 Ant1 2402 -0.72 ≤20.97 PASS 2441 -0.45 ≤20.97 PASS 2480 -0.02 ≤20.97 PASS 3DH5 Ant1 2402 -0.32 ≤20.97 PASS 2441 -0.05 ≤20.97 PASS 2480 0.42 ≤20.97 PASS Report No. ENS2206170013W00101R Page 44 of 74 Ver.1.0 DH5_Ant1_2402 DH5_Ant1_2441 Report No. ENS2206170013W00101R Page 45 of 74 Ver.1.0 DH5_Ant1_2480 2DH5_Ant1_2402 Report No. ENS2206170013W00101R Page 46 of 74 Ver.1.0 2DH5_Ant1_2441 2DH5_Ant1_2480 Report No. ENS2206170013W00101R Page 47 of 74 Ver.1.0 3DH5_Ant1_2402 3DH5_Ant1_2441 Report No. ENS2206170013W00101R Page 48 of 74 Ver.1.0 3DH5_Ant1_2480 Report No. ENS2206170013W00101R Page 49 of 74 Ver.1.0 9.6 CONDUCTED SUPRIOUS EMISSION 9.6.1 Applicable Standard According to FCC Part 15.247(d) and KDB 558074 D01 15.247 MEAS GUIDANCE v05r02 According to IC RSS-247 5.5 9.6.2 Conformance Limit In any 100 kHz bandwidth outside the frequency band in which the spread spectrum intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted, provided the transmitter demonstrates compliance with the peak conducted power limits. 9.6.3 Test Configuration Test according to clause 7.1 radio frequency test setup 1 9.6.4 Test Procedure The transmitter output (antenna port) was connected to the spectrum analyzer  Reference level measurement Establish a reference level by using the following procedure: Set instrument center frequency to DSS channel center frequency. Set Span = approximately 5 times the 20 dB bandwidth, centered on a hopping channel. Set the RBW = 100 kHz. Set the VBW ≥ 3 x RBW. Set Detector = peak. Set Sweep time = auto couple. Set Trace mode = max hold. Allow trace to fully stabilize. Use the peak marker function to determine the maximum Maximumconducetedlevel. Note that the channel found to contain the maximum conduceted level can be used to establish the reference level.  Band-edge measurement Use the following spectrum analyzer settings: Span = wide enough to capture the peak level of the emission operating on the channel closest to the band-edge, as well as any modulation products which fall outside of the authorized band of operation Set RBW ≥ 1% of the span=100kHzSet VBW ≥3 x RBW Set Sweep = autoSet Detector function = peakSet Trace = max hold Allow the trace to stabilize. Set the marker on the emission at the bandedge, or on the highest modulation product outside of the band, if this level is greater than that at the bandedge. Enable the marker-delta function, then use the marker-to -peak function to move the marker to the peak of the in-band emission. The marker-delta value now displayed must comply with the limit specified in this Section. Now, using the same instrument settings, enable the hopping function of the EUT. Allow the trace to stabilize. Follow the same procedure listed above to determine if any spurious emissions caused by the hopping function also comply with the specified limit.  Emission level measurement Use the following spectrum analyzer settings: Span = wide enough to capture the peak level of the in-band emission and all spurious emissions (e.g., harmonics) from the lowest frequency generated in the EUT up through the 10th harmonic.(30MHz to 25GHz).Set RBW = 100 kHzSet VBW ≥ RBW Set Sweep = autoSet Detector function = peakSet Trace = max hold Allow the trace to stabilize. Set the marker on the peak of any spurious emission recorded. The level displayed must comply with the limit specified in this Section. Report No. ENS2206170013W00101R Page 50 of 74 Ver.1.0 9.6.5 Test Results Temperature: 25 ̊C Relative Humidity: 45% ATM Pressure: 1011 mbar Note: N/A Band edge measurements All the antenna(Antenna 1) and modes(GFSK, π/4-DQPSK, 8DPSK) mode have been tested, and the worst(Antenna 1,GFSK) resultrecorded was report as below: TestMode Antenna ChName Frequency[MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 -1.83 -48.82 ≤-21.83 PASS High 2480 -1.06 -48.68 ≤-21.06 PASS Low Hop_2402 -2.46 -51.46 ≤-22.46 PASS High Hop_2480 -1.43 -50.69 ≤-21.43 PASS Report No. ENS2206170013W00101R Page 51 of 74 Ver.1.0 DH5_Ant1_Low_2402 DH5_Ant1_High_2480 Report No. ENS2206170013W00101R Page 52 of 74 Ver.1.0 DH5_Ant1_Low_Hop_2402 DH5_Ant1_High_Hop_2480 Report No. ENS2206170013W00101R Page 53 of 74 Ver.1.0 Al…

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TEST SETUP PHOTOGRAPHS 1.1. Photos of Conducted Emission Measurement 1.2. Photos of Radiation Emission Measurement Spurious Emission Test Setup (Below 1GHz) Spurious Emission Test Setup (Above 1GHz) ----------------The end----------------