FCC ID: 2ARGT-NT110 Bluetooth Headset

Bluetooth Headset NT110 FCC Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

-- Reorient or relocate the receiving antenna.

-- Increase the separation between the equipment and receiver.

-- Connect 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 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.

HEADQUARTERS: 914 WEST PATAPSCO AVENUE BALTIMORE, MARYLAND 21230 PHONE (410) 354-3300 FAX (410) 354-3313 MTI Corporation Agent Authorization Letter

(2019-06-24) Eurofins MET Labs 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize (Shenzhen Tongce Testing Lab) 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, Name: Keitetsu Cho Title: Manager Date: 2019.06.24 TCBJ FORM-4 Issued by: TCB Administrator Revision 7 3/11/2019 Maryland | California | Texas | China | Korea | Taiwan www.metlabs.com

Appendix B: Photographs of EUT Product: Bluetooth Headset Model: NT110 External Photos Page 1 of 11 Page 2 of 11 Page 3 of 11 Page 4 of 11 Page 5 of 11 Page 6 of 11 Page 7 of 11 Page 8 of 11 Page 9 of 11 Page 10 of 11 Page 11 of 11

Appendix B: Photographs of EUT Product: Bluetooth Headset Model: NT110 Internal Photos Page 1 of 8 Page 2 of 8 Antenna Page 3 of 8 Page 4 of 8 Page 5 of 8 Page 6 of 8 Page 7 of 8 Page 8 of 8

Label Artwork and Location Model: NT110 Label:

FCC ID: 2ARGT-NT110 Size: L*W=6.5*3.72mm Location

HEADQUARTERS: 914 WEST PATAPSCO AVENUE BALTIMORE, MARYLAND 21230 PHONE (410) 354-3300 FAX (410) 354-3313 MTI Corporation Long Term Confidentiality Request Letter

(2019-06-24) Eurofins MET Labs 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Bluetooth Headset / NT110 / FCC ID: 2ARGT-

NT110) 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 Schematic Diagram Block Diagram Operational Description BOM required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Please contact me if there is any information you may need. Sincerely, Name: Keitetsu Cho Title: Manager Date: 2019.06.24 TCBJ FORM-4 Issued by: TCB Administrator Revision 7 3/11/2019 Maryland | California | Texas | China | Korea | Taiwan www.metlabs.com

Declaration statement Letter 2019-06-24 MET Laboratories, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Declaration statement Letter To Whom It May Concern:

We hereby declare that (Bluetooth Headset / NT110) fulfill the requirements of 47 CFR Part 15C Section 15.247(g) & 15.247(h). Compliance for section 15.247(g) According to Bluetooth Core Specification, the Bluetooth system transmits the packet with the pseudorandom hopping frequency with a continuous data and the short burst transmission from the Bluetooth system is also transmitted under the frequency hopping system with the pseudorandom hopping frequency system. Compliance for section 15.247(h) According to Bluetooth Core specification, the Bluetooth system incorporates with an adaptive system to detect other user within the spectrum band so that it individually and independently to avoid hopping on the occupied channels. According to the Bluetooth Core specification, the Bluetooth system is designed not have the ability to coordinated with other FHSS System in an effort to avoid the simultaneous occupancy of individual hopping frequencies by multiple transmitter. Please contact me if there is any information you may need. Sincerely, Keitetsu Cho Manager Name:

Position:

Company Name: MTI Corporation Address: 2-18-7 Keian Bldg.4F Higashi Ikebukuro Toshima-Ku, Tokyo 170-0013, Japan E-Mail:

cho@mtijp.com