2AS3P-ITACT2Fitness tracker (Itech Active 2)

FCC Cau tion This de vi ce compl ies with pa rt 15oftheFCCRul es.Ope rationis su bj ect to the fol lowingtwo conditions:(1)This de vi ce may notcauseha rmfulint erference, and(2) thi s de vi ce mustacceptany int erferenc e received,inc ludingint erference tha t may cause undesi red operation. Any Changes ormodificationsnotexpr essly appr oved by the party responsibl e for compl ianc e could void the user's aut hority to operate theequipment . Not e:This equipmenthas be en test ed andfoundto compl y with thelimits fora Class B di gital d evi ce, pursuantto pa rt 15oftheFCC Rul es. Theselimits are de si gne d to pr ovidereasonabl e pr ot ectionagainstha rmfulint erferenc e in a resi de nt ial installation. This equipmentgene rates uses andcan radi ate radi o frequenc y energy and,if not installed andused in accor da nc e with theinstruc tions,may causeha rmfulint erferenc e to radi o communications.Howeve r, the re is nogua rant ee tha t int erference willnot oc curin a pa rticul ar installation.If thi s equipment does causeha rmfulint erferenc e to radi o ortelevi si onre ception,whi ch can bedetermine d by turni ngtheequi pmentof f andon,theuser is encouraged to try to cor rect the int erferenc e by oneormor e ofthe fol lowingmeasu res: -Reor ient orreloc ate the receivi ng ant enna. -Inc reasethe sepa rationbe tween theequipmentandreceiver. -Connect theequipmentint o an outlet ona circui t di fferentfromtha t to whi ch the receiver is connected. -Consult the dealer oran expe rienc ed radi o/ TVtechnician for help. The devi ce has been eva lua ted to meet general RF exposure require ment. The devi ce can be used in portabl e exposure conditionwithout rest riction.

American Exchange Time LLC 2021.05.07 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Fitness tracker （Itech Active 2） Trademark: iTECH MODEL : 500141, 500142, 500143, 500144, 500147, 500149 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Daisy Zhang/ Manager Contact information / address: No.1441 Broadway 27th Floor, New York, NY 10018 New York United States

American Exchange Time LLC 2021.05.07 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Daisy Zhang/ Manager Contact information / address: No.1441 Broadway 27th Floor, New York, NY 10018 New York United States

American Exchange Time LLC Model Difference 2021-05-07 EUT NAME: Fitness tracker （Itech Active 2） FCC ID: 2AS3P-ITACT2 MODEL : 500141, 500142, 500143, 500144, 500147, 500149 All the model are the same circuit and RF module, only for model name and color. Regards Sincerely Client’s signature: Client’s name / title : Daisy Zhang/ Manager Contact information / address: No.1441 Broadway 27th Floor, New York, NY 10018 New York United States

External Photos

Size:20*10mm Fitness tracker （Itech Active 2） FCC ID: 2AS3P-ITACT2 Label location

Internal Photos Antenna

RF EXPOSURE EVALUATION METHOD FCC ID: 2AS3P-ITACT2 According to KDB 447498 D01V06 SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR,where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 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. BLE L Frequency Maximum Conducted Output Power(PK) Conducted Output Power Limit (MHz) (dBm) dBm GFSK 1Mbps 2402 -0.258 30 2440 0.703 30 2480 0.605 30 GFSK 2Mbps 2402 -0.254 30 2440 0.703 30 2480 0.605 30 max possible output power (PK,conducted)：0±1dBm 2dBi logarithmic terms convert to numeric result is nearly 1.58 1dBm=1.26mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 1.26/5*√2.402=0.39≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. 2440MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 1.26/5*√2.441=0.39≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 1.26/5*√2.48=0.4≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. Conclusion: No SAR is required.

No.：BCTC/RF-EMC-005 Page 1 of 49 Edition：A.3 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2104462195E Applicant: American Exchange Time LLC Product Name: Fitness tracker （Itech Active 2） Model/Type Ref.: 500141 500142, 500143, 500144, 500147, 500149 Tested Date: 2021-04-28 to 2021-05-07 Issued Date: 2021-05-07 Report No.: BCTC2104462195E No.：BCTC/RF-EMC-005 Page 2 of 49 Edition：A.3 FCC ID:2AS3P-ITACT2 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Fitness tracker （Itech Active 2） Trademark: iTECH Model/Type Ref.: 500141 500142, 500143, 500144, 500147, 500149 Prepared For: American Exchange Time LLC Address: No.1441 Broadway 27th Floor, New York, NY 10018 New York United States Manufacturer: Shenzhen Jiachenzhi technology Co., Ltd Address: 5/f, building 6, Tangtou third industrial zone, Shiyan Street, Bao 'an district, Shenzhen, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Tangwei, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China. Sample Received Date: 2021-04-28 Sample tested Date: 2021-04-28 to 2021-05-07 Issue Date: 2021-05-07 Report No.: BCTC2104462195E Test Standards FCC Part15.247 ANSI C63.10-2013 Test Results PASS Remark: This is Bluetooth BLE radio test report. Tested by: Approved by: Lei Chen/Project Handler Zero Zhou/Reviewer Report No.: BCTC2104462195E No.：BCTC/RF-EMC-005 Page 3 of 49 Edition：A.3 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ............................................................ 5 2. TEST SUMMARY ..................................................... 6 3. MEASUREMENT UNCERTAINTY ....................................... 7 4. PRODUCT INFORMATION AND TEST SETUP............................ 8 4.1 Product Information ..................................................... 8 4.2 Test Setup Configuration ................................................ 8 4.3 Support Equipment ..................................................... 9 4.4 Channel List ........................................................... 9 4.5 Test Mode ............................................................ 10 4.6 table of parameters of text software setting ................................ 10 5. TEST FACILITY AND TEST INSTRUMENT USED ........................ 11 5.1 Test Facility ........................................................... 11 5.2 Test Instrument Used .................................................. 11 6. CONDUCTED EMISSIONS ............................................ 13 6.1 Block Diagram Of Test Setup ............................................ 13 6.2 Limit ................................................................. 13 6.3 Test procedure ........................................................ 13 6.4 EUT operating Conditions ............................................... 13 6.5 Test Result ........................................................... 14 7. RADIATED EMISSIONS .............................................. 16 7.1 Block Diagram Of Test Setup ............................................ 16 7.2 Limit ................................................................. 17 7.3 Test procedure ........................................................ 18 7.4 EUT operating Conditions ............................................... 19 7.5 Test Result ........................................................... 20 8. RADIATED BAND EMISSION MEASUREMENT AND RESTRICTED BANDS OF OPERATION .................................................. 24 8.1 Block Diagram Of Test Setup ............................................ 24 8.2 Limit ................................................................. 24 8.3 Test procedure ........................................................ 25 8.4 EUT operating Conditions ............................................... 25 8.5 Test Result ........................................................... 26 9. POWER SPECTRAL DENSITY TEST ................................... 27 9.1 Block Diagram Of Test Setup ............................................ 27 9.2 Limit ................................................................. 27 9.3 Test procedure ........................................................ 27 9.4 EUT operating Conditions ............................................... 27 9.5 Test Result ........................................................... 28 10. BANDWIDTH TEST .................................................. 32 Report No.: BCTC2104462195E No.：BCTC/RF-EMC-005 Page 4 of 49 Edition：A.3 10.1 Block Diagram Of Test Setup .......................................... 32 10.2 Limit ................................................................ 32 10.3 Test procedure ....................................................... 32 10.4 EUT operating Conditions ............................................. 32 10.5 Test Result .......................................................... 33 11. PEAK OUTPUT POWER TEST ........................................ 37 11.1 Block Diagram Of Test Setup .......................................... 37 11.2 Limit ................................................................ 37 11.3 Test procedure ....................................................... 37 11.4 EUT operating Conditions ............................................. 37 11.5 Test Result .......................................................... 38 12. 100 KHZ BANDWIDTH OF FREQUENCY BAND EDGE ................... 39 12.1 Block Diagram Of Test Setup .......................................... 39 12.2 Limit ................................................................ 39 12.3 Test procedure ........................................…

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

Report No.: BCTC2104462195E No.：BCTC/RF-EMC-005 Page 47 of 49 Edition：A.3 15. EUT TEST SETUP PHOTOGRAPHS Conducted emissions Radiated Measurement Photos Report No.: BCTC2104462195E No.：BCTC/RF-EMC-005 Page 48 of 49 Edition：A.3