2A9F7-MAELSTROMMassager

FCC Warnning: 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 againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures: ЬReorient or relocate the receiving antenna. ЬIncrease the separation between the equipment and receiver. ЬConnect 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 0cm between the radiator and your body.

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202507653 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 4 Product Name: Massager Model No.: Maelstrom EUT Constructional Details External Photo Report No.: HTT202507653 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 4 Report No.: HTT202507653 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 4 Report No.: HTT202507653 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 4 of 4 ------End------

Label and Location Size: L: 1.0cm*W: 0.2cm Label and Location FCC ID : 2A9F7-MAELSTROM

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202507653 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 3 Product Name: Massager Model No.: Maelstrom EUT Constructional Details Internal Photo Report No.: HTT202507653 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 3 ANTENNA Report No.: HTT202507653 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 3 ------End------

Shenzhen HTT Technology Co., Ltd. Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 1 of 8 RF Exposure evaluation Report Reference No. ..................... : FCC ID............................................. : HTT202507653F02 2A9F7-MAELSTROM Compiled by ( position+printed name+signature) . : File administrators Supervised by ( position+printed name+signature) . : Project Engineer Approved by ( position+printed name+signature) . : RF Manager Date of issue .................................... : Jul. 23, 2025 Testing Laboratory Name .............. : Shenzhen HTT Technology Co.,Ltd. Address............................................ : 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name ............................ : Shenzhen Envision Technology Innovation Co., Ltd. Address............................................ : 301,Building 4,1970 Science and Technology Park Minzhi Street,Longhua District Shenzhen,China Standard ........................................... : 47CFR §1.1310 47CFR §2.1093 KDB447498 D01 General RF Exposure Guidance v06 Shenzhen HTT Technology Co.,Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT Technology Co.,Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : Massager Manufacturer .................................... : Dongguan Thunderstorm Health Technology Co., Ltd Trade Mark ........................................ N/A Model/Type reference ...................... : Maelstrom Rating ............................................... : DC 7.4V From Battery and DC 5V From External Circuit Result ............................................... : PASS Report No.: HTT202507653F02 Page 2 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 2 of 8 T E S T R E P O R T Equipment under Test : Massager Model /Type : Maelstrom Applicant : Shenzhen Envision Technology Innovation Co., Ltd. Address : 301,Building 4,1970 Science and Technology Park Minzhi Street,Longhua District Shenzhen,China Manufacturer : Dongguan Thunderstorm Health Technology Co., Ltd Address : No. 26, Zhenxing 1st Road, Kengkou, Chashan Town, Dongguan City, Guangdong Province, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: HTT202507653F02 Page 3 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 3 of 8 Contents 1 T E S T S T A N D A R D S ................................................... 4 2 S U M M A R Y .............................................................. 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Special Accessories 5 2.4 Modifications 5 3 T E S T E N V I R O N M E N T 6 3.1 Address of the test laboratory 6 3.2 Test Facility 6 3.3 Statement of the measurement uncertainty 6 4 T E S T L I M I T 7 4.1 Requirement 7 4.2 Conducted Power Results 7 4.3 Manufacturing tolerance 8 4.4 Evaluation Result 8 4.5 Simultaneous Transmission for SAR Exclusion 8 5 C O N C L U S I O N 8 Report No.: HTT202507653F02 Page 4 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 4 of 8 1 T E S T S T A N D A R D S The tests were performed according to following standards: ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Device, RF Exposure, Equipment Authorization Procedures. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1093: Radiofrequency radiation exposure evaluation: portable devices Report No.: HTT202507653F02 Page 5 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 5 of 8 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : Jul. 17, 2025 Testing commenced on : Jul. 17, 2025 Testing concluded on : Jul. 23, 2025 2.2 Product Description Product Name: Massager Model No.: Maelstrom Series model: Maelstrom-I, Maelstrom-II, Maelstrom-III, Maelstrom-IV, Maelstrom-V Test sample(s) ID: HTT202507653-1(Engineer sample) HTT202507653-2(Normal sample) Operation frequency 2402~2480 MHz Number of Channels 40 Modulation Type GFSK Channel separation 2MHz Antenna Type: PCB Antenna Antenna Gain: 1.9 dBi Power Supply: DC 7.4V From Battery and DC 5V From External Circuit Adapter Information (Auxiliary test provided by the lab): Mode: GS-0500200 Input: AC100-240V, 50/60Hz, 0.3A max Output: DC 5V, 2A 2.3 Special Accessories The following is the EUT test of the auxiliary equipment provided by the laboratory: Description Manufacturer Model Technical Parameters Certificate…

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Shenzhen HTT Technology Co., Ltd. Report No.: HTT202507653F01 This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 27 TEST Report Applicant: Shenzhen Envision Technology Innovation Co., Ltd. Address of Applicant: 301,Building 4,1970 Science and Technology Park Minzhi Street,Longhua District Shenzhen,China Manufacturer : Dongguan Thunderstorm Health Technology Co., Ltd Address of Manufacturer : No. 26, Zhenxing 1st Road, Kengkou, Chashan Town, Dongguan City, Guangdong Province, China Equipment Under Test (EUT) Product Name: Massager Model No.: Maelstrom Series model: Maelstrom-I, Maelstrom-II, Maelstrom-III, Maelstrom-IV, Maelstrom-V Trade Mark: N/A FCC ID: 2A9F7-MAELSTROM Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of sample receipt: Jul. 17, 2025 Date of Test: Jul. 17, 2025 ~ Jul. 23, 2025 Date of report issued: Jul. 23, 2025 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: HTT202507653F01 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 2 of 27 1. Version Version No. Date Description 00 Jul. 23, 2025 Original Tested/ Prepared By Date: Jul. 23, 2025 Project Engineer Check By: Date: Jul. 23, 2025 Reviewer Approved By : Date: Jul. 23, 2025 Authorized Signature Report No.: HTT202507653F01 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 3 of 27 2. Contents Page 1. VERSION ........................................................................................................................................................ 2 2. CONTENTS .................................................................................................................................................... 3 3. TEST SUMMARY ........................................................................................................................................... 4 4. GENERAL INFORMATION ............................................................................................................................ 5 4.1. GENERAL DESCRIPTION OF EUT ................................................................................................................ 5 4.2. TEST MODE ............................................................................................................................................... 7 4.3. DESCRIPTION OF SUPPORT UNITS .............................................................................................................. 7 4.4. DEVIATION FROM STANDARDS .................................................................................................................... 7 4.5. ABNORMALITIES FROM STANDARD CONDITIONS ........................................................................................... 7 4.6. TEST FACILITY ........................................................................................................................................... 7 4.7. TEST LOCATION ......................................................................................................................................... 7 4.8. ADDITIONAL INSTRUCTIONS ........................................................................................................................ 7 5. TEST INSTRUMENTS LIST ........................................................................................................................... 8 6. TEST RESULTS AND MEASUREMENT DATA ........................................................................................... 9 6.1. CONDUCTED EMISSIONS ............................................................................................................................ 9 6.2. CONDUCTED OUTPUT POWER .................................................................................................................. 12 6.3. CHANNEL BANDWIDTH .............................................................................................................................. 13 6.4. POWER SPECTRAL DENSITY ..................................................................................................................... 14 6.5. BAND EDGES ........................................................................................................................................... 15 6.5.1 Conducted Emission Method .......................................................................................................... 15 6.5.2 Radiated Emission Method ............................................................................................................. 16 6.6. SPURIOUS EMISSION ................................................................................................................................ 18 6.6.1 Conducted Emission Method .......................................................................................................... 18 6.6.2 Radiated Emission Method ............................................................................................................. 19 6.7. ANTENNA REQUIREMENT .......................................................................................................................... 26 7. TEST SETUP PHOTO .................................................................................................................................. 27 8. EUT CONSTRUCTIONAL DETAILS ...........................................…

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1 Appendix RF Test Data for BLE Company: : Shenzhen Envision Technology Innovation Co., Ltd. EUT : Massager FCC ID: : 2A9F7-MAELSTROM Model Number : Maelstrom Report No. : HTT202507653F01 Reviewed By : Heber He 2 1. Duty Cycle 1.1 Test Result 1.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) 1M SISO 2402 0.094 0.625 15.04 8.23 0.00 2440 0.094 0.625 15.04 8.23 0.00 2480 0.095 0.625 15.20 8.18 0.00 2M SISO 2402 0.062 0.625 9.92 10.03 0.00 2440 0.062 0.625 9.92 10.03 0.03 2480 0.063 0.625 10.08 9.97 0.00 3 1.2 Test Graph 1.2.1 Ant1 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 4 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 5 2M_MCH_2440MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV 6 2. Bandwidth 2.1 Test Result 2.1.1 OBW Mode TX Type Frequency (MHz) ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 1.019 / Pass 2440 1 1.020 / Pass 2480 1 1.020 / Pass 2M SISO 2402 1 2.052 / Pass 2440 1 2.050 / Pass 2480 1 2.052 / Pass 2.1.2 6dB BW Mode TX Type Frequency (MHz) ANT 6dB Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 0.506 >=0.5 Pass 2440 1 0.503 >=0.5 Pass 2480 1 0.507 >=0.5 Pass 2M SISO 2402 1 0.858 >=0.5 Pass 2440 1 0.859 >=0.5 Pass 2480 1 0.857 >=0.5 Pass 7 2.2 Test Graph 2.2.1 OBW 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 8 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 9 2M_MCH_2440MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV 10 2.2.2 6dB BW 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 11 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 12 2M_MCH_2440MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV 13 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Mode TX Type Frequency (MHz) Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit 1M SISO 2402 0.18 <=30 Pass 2440 0.70 <=30 Pass 2480 1.14 <=30 Pass 2M SISO 2402 0.18 <=30 Pass 2440 0.70 <=30 Pass 2480 1.09 <=30 Pass 14 4. Maximum Power Spectral Density 4.1 Test Result 4.1.1 PSD Mode TX Type Frequency (MHz) Maximum PSD (dBm/3kHz) Verdict ANT1 Limit 1M SISO 2402 -17.86 <=8 Pass 2440 -17.51 <=8 Pass 2480 -16.78 <=8 Pass 2M SISO 2402 -20.62 <=8 Pass 2440 -20.03 <=8 Pass 2480 -19.64 <=8 Pass 15 4.2 Test Graph 4.2.1 PSD 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 16 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 17 2M_MCH_2440MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV 18 5. Unwanted Emissions In Non-restricted Frequency Bands 5.1 Test Result 5.1.1 Ref Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) 1M SISO 2402 1 0.12 2440 1 0.66 2480 1 1.09 2M SISO 2402 1 -0.13 2440 1 0.41 2480 1 0.78 Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2013, the channel contains the maximum PSD level was used to establish the reference level. 5.1.2 CSE Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) Limit (dBm) Verdict 1M SISO 2402 1 1.09 -18.91 Pass 2440 1 1.09 -18.91 Pass 2480 1 1.09 -18.91 Pass 2M SISO 2402 1 0.78 -19.22 Pass 2440 1 0.78 -19.22 Pass 2480 1 0.78 -19.22 Pass Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2013, the channel contains the maximum PSD level was used to establish the reference level. 19 5.2 Test Graph 5.2.1 Ref 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 20 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 21 2M_MCH_2440MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV 22 5.2.2 CSE 1M_LCH_2402MHz_Ant1_NTNV 1M_LCH_2402MHz_Ant1_NTNV 23 1M_MCH_2440MHz_Ant1_NTNV 1M_HCH_2480MHz_Ant1_NTNV 24 1M_HCH_2480MHz_Ant1_NTNV 2M_LCH_2402MHz_Ant1_NTNV 25 2M_LCH_2402MHz_Ant1_NTNV 2M_MCH_2440MHz_Ant1_NTNV 26 2M_HCH_2480MHz_Ant1_NTNV 2M_HCH_2480MHz_Ant1_NTNV

DongGuanSYLTechnologyCO.,LTD AntennaSpecification Manufacture：SYL ProductName：LT-BWC01-BT保温舱Antenna AntennaType：PCB TestDate：2025/7/26 Testedby ：CheckedBy:ApprovedBy: ChengMingWeiDuLinQianCongGen Dong Guan SYL Technology CO.,LTD 1.General Description Manufacturer：Dong Guan SYL Technology CO.,LTD Address： Room 203,DongHui Industrial Park,No.198 DaTang Road, DongGuan, GuangDong,China Product Name：LT-BWC01-BT保温舱Antenna Product model：LT-BWC01-BT保温舱 Antenna Type ：PCB Antenna Test Frequency ： 2400-2500MHz Antenna Gain ： VSWR ： ＜ 1.4 Impedance ： 50Ω Polarization：Linear 1.9dBi DongGuanSYLTechnologyCO.,LTD 2.Antennasize: 线径：0.52mm长度：30.66mm DongGuanSYLTechnologyCO.,LTD 3.GainandEfficiency Frequency 2.44GHz XY-PlaneXZ-PlaneYZ-Plane Efficiency （ % ） Average-0.5-3.6-3.0 60.2% Peak1.21.91.1 DongGuanSYLTechnologyCO.,LTD 4.ReturnLoss 5.XY-Plane DongGuanSYLTechnologyCO.,LTD 6.XZ-Plane 7.YZ-Plane DongGuanSYLTechnologyCO.,LTD 8.3DRadiationPatternDiagram 10.TestSetupPhoto

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202507653 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 2 Product Name: Massager Model No.: Maelstrom Test Setup Photo Radiated Emission Report No.: HTT202507653 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 2 Conducted Emission RF TEST ------End------