2AOOA-ORO2TILDETilde Pro (Headphone) with Bluetooth

OROSOUND 84 Bis Quai du Petit Parc, Saint-Maur-des-Fosses, 94100, France --------------------------------------------------------------------------------------------------------------------- DATE: 2020-09-09 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AOOA- ORO2TILDE 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 Type File Name Schematics 2AOOA-ORO2TILDE_FCCID_Schematics Block Diagram 2AOOA-ORO2TILDE_FCCID_BlockDiagram Operational Description 2AOOA-ORO2TILDE_FCCID_OperationalDescription 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. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, OROSOUND ------------------------------- (Eric BENHAIM) (CTO)

OROSOUND 84 Bis Quai du Petit Parc, Saint-Maur-des-Fosses, 94100, France -------------------------------------------------------------------------------- (FCC ID：2AOOA-ORO2TILDE) POWER OF ATTORNEY DATE: 2020-09-09 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, OROSOUND 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. Sincerely, OROSOUND ------------------------------- (Eric BENHAIM) (CTO) We, the undersigned, hereby authorize Waltek Testing Group (Shenzhen) Co., Ltd. Jandy So on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Testing Group (Shenzhen) Co., Ltd. Jandy So on our behalf shall have the same effect as acts of our own.

Report No.: W EXHIBI EUT View 1 EUT View 2 WTX20X040 T 2 - EUT 1 2 20430W-1/2 T EXTER RNAL PH HOTOGR APHS Model FCC : ORO2 Tilde C Part 15.247 Report No.: W EUT View 3 EUT View 4 WTX20X040 3 4 20430W-1/2 Model FCC : ORO2 Tilde C Part 15.247 Report No.: W EUT View 5 EUT View 6 WTX20X040 5 6 20430W-1/2 Model FCC : ORO2 Tilde C Part 15.247 Report No.: W EUT View 7 WTX20X040 7 20430W-1/2 Model FCC : ORO2 Tilde C Part 15.247

Report No.: W EXHIBI Proposed Specificatio n it is visible durable to r expected lif e Proposed WTX20X040 T 1 - PRO FCC ID La ns: The label or easily acc emain fully l etime. Label Loca 20430W-1/2 ODUCT L abel Forma shall be secu cessible to th legible and in ation on EU LABELIN at FCC ID urely affixed t he user, and ntact on the UT FCC NG D: 2AOOA to a permane shall not be device in al l ID Label Lo A-ORO2TIL ently attached readily detac l normal cond cation LDE d part of the d chable. The l ditions of use Model FCC device, in a lo label shall be e throughout : ORO2 Tilde C Part 15.247 ocation where e sufficiently t the device’s e y s

Model: ORO2 Tilde Report No.: WTX20X04020430W-1 Page 1 of 56 FCC Part 15.247 FCC Part 15C Measurement and Test Report For OROSOUND 84 B Quai du Petit Parc, 94100 Saint-Maur-des-Fosses, FRANCE FCC ID: 2AOOA-ORO2TILDE FCC Rule(s): FCC Part 15.247 Product Description: Tilde Pro Tested Model: ORO2 Tilde Report No.: WTX20X04020430W-1 Sample Receipt Date: Apr.20, 2020 Tested Date: Apr.20, 2020 to May.12, 2020, Sept.24, 2020 Issued Date: Sept.24, 2020 Tested By: Jack Huang / Engineer Reviewed By: Lion Cai / RF Manager Approved & Authorized By: Silin Chen / Manager Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Website: www.semtest.com.cn Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Waltek Testing Group (Shenzhen) Co., Ltd. Model: ORO2 Tilde Report No.: WTX20X04020430W-1 Page 2 of 56 FCC Part 15.247 TABLE OF CONTENTS 1. GENERAL INFORMATION ................................................................................................................................... 4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ............................................................................... 4 1.2 TEST STANDARDS ................................................................................................................................................... 5 1.3 TEST METHODOLOGY ............................................................................................................................................. 5 1.4 TEST FACILITY ....................................................................................................................................................... 5 1.5 EUT SETUP AND TEST MODE ................................................................................................................................. 6 1.6 MEASUREMENT UNCERTAINTY .............................................................................................................................. 7 1.7 TEST EQUIPMENT LIST AND DETAILS ..................................................................................................................... 8 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 10 3. ANTENNA REQUIREMENT ................................................................................................................................ 11 3.1 STANDARD APPLICABLE ....................................................................................................................................... 11 3.2 EVALUATION INFORMATION ................................................................................................................................ 11 4. FREQUENCY HOPPING SYSTEM REQUIREMENTS ................................................................................... 12 4.1 STANDARD APPLICABLE ....................................................................................................................................... 12 4.2 FREQUENCY HOPPING SYSTEM............................................................................................................................. 12 4.3 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE .................................................................................... 13 5. QUANTITY OF HOPPING CHANNELS AND CHANNEL SEPARATION ................................................... 14 5.1 STANDARD APPLICABLE ....................................................................................................................................... 14 5.2 TEST PROCEDURE ................................................................................................................................................. 14 5.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 14 6. DWELL TIME OF HOPPING CHANNEL .......................................................................................................... 18 6.1 STANDARD APPLICABLE ....................................................................................................................................... 18 6.2 TEST PROCEDURE ................................................................................................................................................. 18 6.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 19 7. 20DB BANDWIDTH ............................................................................................................................................... 26 7.1 STANDARD APPLICABLE ....................................................................................................................................... 26 7.2 TEST PROCEDURE ................................................................................................................................................. 26 7.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 27 8. RF OUTPUT POWER ............................................................................................................................................ 30 8.1 STANDARD APPLICABLE ....................................................................................................................................... 30 8.2 TEST PROCEDURE ................................................................................................................................................. 30 8.3 SUMMARY OF TEST RESULTS/PLOTS .................…

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Report No.: W EXHIBI Conducted Radiation E WTX20X040 T 4 - TES Emission Te Emission Tes 20430W-1/2 ST SETUP est Setup st Setup (Belo P PHOTO ow 30MHz) OGRAPH HS Model FCC : ORO2 Tilde C Part 15.247 Report No.: W Radiation E Radiation E WTX20X040 Emission Tes Emission Tes 20430W-1/2 st Setup (30M st Setup (1GH MHz to 1GHz Hz to 18GHz z) z) Model FCC : ORO2 Tilde C Part 15.247 Report No.: W Radiation E WTX20X040 Emission Tes 20430W-1/2 st Setup (Abo ove 18GHz) Model FCC : ORO2 Tilde C Part 15.247