2BAGA010021RSleepbuds

Drowsy Digital Inc Date: 4/9/2026 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 To whom it may concern: I , the undersigned, hereby authorize UL Verification Services Inc. to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents r elating to these matters. Any and all acts carried out by UL Verification Services Inc. on our beh alf shall have t he same effect as acts of our own. I , the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, p ursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). In authorizing UL Verification Services Inc . as our representative, we still recognize that we are responsible to: a) comply with the relevant provisions of the certification program; b) make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation ( e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints; c) make claims regarding certification only in respect of the scope for which certification has been granted; d) do not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized; e) upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division; f ) use certification only to indicate the products are certi,fied as being in conformity with specified standards;

Date: 4/9/2026

GRAPHICS, LID INTERIOR OZLO SLEEPBUDS® GEN 2, WORLDWIDE 01 FIGURE 1.0 RATIO 2:1 LID INTERIOR March 2, 2026 DROWSY DIGITAL, INC PROPRIETARY RIGHTS ARE INCLUDED HEREIN. THIS INFORMATION MAY NOT BE COPIED, TRANSFERRED OR DISCLOSED EXCEPT AS AUTHORIZED 1030083 NAA 3/2/2026 E536646 AUDIO EQUIPMENT D E S I G N E D B Y D R O W S Y D I G I T A L , I N C . d b a O Z L O S L E E P , M A R L B O R O U G H , M A U S A 0 1 7 5 2 W W W . O Z L O S L E E P . C O M / P A T E N T S O Z L O S L E E P B U D S ® 2 W I T H C H A R G E C A S E 1 I C P 5 / 2 1 / 3 0 C A P A C I T Y : 3 5 0 m A h I N P U T : 5 V ⎓ 2 5 0 m A O U T P U T : 4 . 6 V ⎓ 1 5 m A x 2 74.136 MM FCC ID: 2BAGA010021R FCC ID: 2BAGA010021L FCC ID: 2BAGA010021 IC: 31011-010021R IC: 31011-010021L IC: 31011-010021 FIT XXX-XXXXXX XXX-XXXXXX XXX-XXXXXX MODELS: Case 010021, Left Earbud 010021L, Right Earbud 010021R 0 1 0 0 2 1 The information will be silk screened on the bottom of the charging case

FCC ID: 2BAGA010021R According to 447498 D04 Interim General RF Exposure Guidance v01, 2.1.4 MPE-Based Exemption An alternative to the SAR-based exemption is provided in § 1.1307(b)(3)(i)(C), for a much wider frequency range, from 300 kHz to 100 GHz, applicable for separation distances greater or equal to λ/2π, where λ is the free-space operating wavelength in meters. The MPE-based test exemption condition is in terms of ERP, defined as the product of the maximum antenna gain and the delivered maximum time-averaged power.10 For this case, a RF source is an RF exempt device if its ERP (watts) is no more than a frequency-dependent value, as detailed tabular form in Appendix B. These limits have been derived based on the basic specifications on Maximum Permissible Exposure (MPE) considered for the FCC rules in § 1.1310(e)(1). B.4 SAR-based Exemption SAR-based thresholds are derived based on frequency, power, and separation distance of the RF source. The formula defines the thresholds in general for either available maximum time- averaged power or maximum time-averaged ERP, whichever is greater. If the ERP of a device is not easily determined, such as for a portable device with a small form factor, the applicant may use the available maximum time-averaged power exclusively if the device antenna or radiating structure does not exceed an electrical length of λ/4. As for devices with antennas of length greater than λ/4 where the gain is not well defined, but always less than that of a half-wave dipole (length λ/2), the available maximum time-averaged power generated by the device may be used in place of the maximum time-averaged ERP, where that value is not known. The separation distance is the smallest distance from any part of the antenna or radiating structure for all persons, during operation at the applicable ERP. In the case of mobile or portable devices, the separation distance is from the outer housing of the device where it is closest to the antenna. The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula (B.1). The example values shown in Table B.2 are for illustration only. 1. SAR test exclusion threshold for 2.4 GHz is 3 mW. -The maximum tune-up power with tolerance is 4.5 dBm = 2.818 mW, the antenna gain is -5.8 dBi, so: the maximum EIRP = -1.3 dBm = 0.741 mW the ERP = EIRP – 2.15 = -3.45 dBm = 0.452 mW. - When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. 2. Conclusion: No SAR is required.

The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. FCC 47 CFR PART 15 SUBPART C ISED RSS-247 Issue 4 TEST REPORT For Sleepbuds MODEL NUMBER: 010021R REPORT NUMBER: 4792167330-3-RF-3 ISSUE DATE: May 7, 2026 FCC ID: 2BAGA010021R IC: 31011-010021R Prepared for Drowsy Digital Inc 850 New Burton Road Suite 201 19904 Dover Delaware United States 19904 Prepared by UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch Room 101, Building 2, No.4, Information Road, Songshan Lake, Dongguan, Guangdong, China Tel: +86 769 22038881 Fax: +86 769 33244054 Website: www.ul.com REPORT NO.: 4792167330-3-RF-3 Page 2 of 88 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Revision History Rev. Issue Date Revisions Revised By V0 May 7, 2026 Initial Issue REPORT NO.: 4792167330-3-RF-3 Page 3 of 88 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC Part 15.203/15.247 (c) RSS-GEN Clause 6.8 Pass AC Power Line Conducted Emission ANSI C63.10-2020, Clause 6.2 FCC Part 15.207 RSS-GEN Clause 8.8 Pass Conducted Output Power ANSI C63.10-2020, Clause 11.9.1.2 FCC Part 15.247 (b)(3) RSS-247 Clause 6.3.2 Pass 6dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020, Clause 11.8.1 FCC Part 15.247 (a)(2) RSS-247 Clause 6.3.1 (a) RSS-Gen Clause 6.7 Pass Power Spectral Density ANSI C63.10-2020, Clause 11.10.2 FCC Part 15.247 (e) RSS-247 Clause 6.3.1 (b) Pass Conducted Band edge and spurious emission ANSI C63.10-2020, Clause 11.11 FCC Part 15.247(d) RSS-247 Clause 6.6 Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020, Clause 11.12 FCC Part 15.247 (d) FCC Part 15.205/15.209 RSS-247 Clause 6.6 RSS-GEN Clause 8.9 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: 1. 1.For ISED, this report is also performed according to ANSI C63.10-2020 + Cor.1-2023 + C63.10a-2024 + Errata to C63.10a-2024 standards. 2.For FCC, this report is also performed according to ANSI C63.10-2020 + Cor.1-2023. *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to <FCC 47 CFR PART 15 SUBPART C, ISED RSS-247 Issue 4> when <Simple Acceptance> decision rule is applied. Decision rule for statement of conformity: The measurement uncertainty is not taken into account for statement of conformity. REPORT NO.: 4792167330-3-RF-3 Page 4 of 88 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 6 2. TEST METHODOLOGY ......................................................................................................... 7 3. FACILITIES AND ACCREDITATION ..................................................................................... 7 4. CALIBRATION AND UNCERTAINTY ................................................................................... 8 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 8 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 8 5. EQUIPMENT UNDER TEST .................................................................................................. 9 5.1. DESCRIPTION OF EUT ........................................................................................... 9 5.2. CHANNEL LIST ........................................................................................................ 9 5.3. MAXIMUM POWER .................................................................................................. 9 5.4. TEST CHANNEL CONFIGURATION ...................................................................... 10 5.5. THE WORSE CASE POWER SETTING PARAMETER .......................................... 10 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ......................................................... 10 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................. 11 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 13 7. ANTENNA PORT TEST RESULTS ..................................................................................... 16 7.1. CONDUCTED OUTPUT POWER ........................................................................... 16 7.2. 6DB BANDWIDTH AND 99% OCCUPIED BANDWIDTH ........................................ 17 7.3. POWER SPECTRAL DENSITY .............................................................................. 19 7.4. CONDUCTED BAND EDGE AND SPURIOUS EMISSION ..................................... 21 7.5. DUTY CYCLE ......................................................................................................... 23 8. RADIATED TEST RESULTS ............................................................................................... 24 8.1. RESTRICTED BANDEDGE ...........................................................…

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1 ANTENNA TEST REPORT Applicant Drowsy Digital, INC Address 850 New Burton Road, Suite 201, Dover DE 19904 Supplier Shenzhen Top-link Technologies Co.,Ltd. 3rd Floor, Building A3, Zhengfeng Industrial Park, No.610 Fengtang Avenue, Zhancheng Community, Fuhai Street, Baoan District, Shenzhen, China. Product OZLO Sleepbuds 2 Product No. 01 002 1 C01 WW 01 Model 01 002 1 Peak Gain Earbud R antenna (PN: 1030072) : -5.8dBi Test person Liu Feng Date of test 2026/03/24 Approval Written Reviewed Approved Liu Feng Jiang Lingqing Zhu Senyin Data 2026/03/24 2026/03/25 2026/03/25 2 ANTENNA TEST REPORT TABLE OF CONTENTS 1. MEASUREMENTS SETUP .................................................................................3 2. PHOTOGRAPHS OF ANTENNA ........................................................................3 3. TEST INSTRUMENTS .......................................................................................5 4. MEASUREMENTS DESCRIPTION.......................................................................5 5. TEST RESULTS .................................................................................................5 6. PHOTOGRAPHS OF THE TEST CONFIGURATION.............................................13 3 1. MEASUREMENTS SETUP 2. PHOTOGRAPHS OF ANTENNA RF Cables LAN Network Analyzer Turntable 4 3. TEST INSTRUMENTS Equipment Manufacturer Model No. Serial No. Calibrated Date Calibrated Until Antenna chamber GTS RayZone 1800 CT10116480A2084 2025/10/28 2026/10/27 Signal Generator ROHDE&SCHWARZ ZND 100269 2025/10/28 2026/10/27 Test Software GTS Libra N/A N/A 4. MEASUREMENTS DESCRIPTION 1. S Parameter Measurements A testing method for evaluating the signal reflection performance of antennas. S Parameter measurements were done by using Network Analyzer –ROHDE&SCHWARZ, the Return Loss of the antennas were obtained to ensure the efficiency over the operation frequency. 2. Antenna Radiation Patten Measurements The distribution of radiation power from antennas in different directions. Radiation Pattern Measurements were done in the GTS anechoic chamber through radiation, the earbuds were set to continuous radiation and the RayZone 1800 receive the RF power from 360 degree angles by using rotation of DUT (Device under test). 3. Antenna Gain Calculation Antenna gain is an important parameter for measuring antenna radiation. The antenna gains will be calculated by GTS chamber software when radiation pattern tests are done. 5. TEST RESULTS 5.4 EARBUD RIGHT ANTENNA VSWR Frequency (MHz) 2400 2480 Earbud Right 6.9 1.7 5.8 EARBUD RIGHT ANTENNA EFFICIENCY Frequency (MHz) 2400~2485 Earbud Right 11% 5 5.14 EARBUD RIGHT ANTENNA 2D Frequency (MHz) XY XZ YZ 2400 Peak Gain (dBi) -11.1 -9.4 -10.1 Degree 210° 210° 210° 2440 Peak Gain (dBi) -9.3 -7.7 -8.1 Degree 210° 210° 210° 2485 Peak Gain (dBi) -7.6 -5.8 -6.5 Degree 210° 210° 210° 6 6. PHOTOGRAPHS OF THE TEST CONFIGURATION