FCC ID: YZZGUV3060 True Wireless Earbuds

Headset Components Touch Point LED Indicator Microphone LED Indicator USB Port Package contents Pairing Procedure Enter Pairing Mode Opening the top cover of the charging box will trigger the automatic pairing mode with both indicator lights flashing. Note: The pairing takes about 10s and the sound connected indicates its success. Start Pairing Start pairing Charging the Charging Box Connect the Charging Box to a powered USB port using the USB Type-C cable. Note: It takes about 2 hours to fully charge the charging box and the earbuds. Charging the Earbuds Place the earbuds inside the Charging Box. The magnet parts inside would adjust the earbuds to a fit condition. Note: It takes about 2 hours to fully charge the earbuds. Wireless Charging Place the charging box on the center of the wireless charger (not provided) as shown in the illustration. Note: It takes about 4 hours to fully charge the earbuds and the charging box. Charging Indicator Status Item Status Indicator GUV3060 True Wireless Earbuds Enable Bluetooth function on the phone, search for GUV3060, click to connect and wait for the sound connected indicating its success. GUV3060 Charging Box 2 Extra Small Earplugs 2 Extra Large Earplugs During this process, both indicator lights will turn off first and then the blue indicator light would turn to slow flashing. Note: The earbuds would shut down for power saving when not connected to the Bluetooth device for 5 minutes. USB cable Quick User Guide Earbuds Charging Fully-charged Blue indicator light on Blue indicator light off Charging Box Charging Red indicator light on Fully-charged Low Battery Level Green indicator light on Blue indicator light flashing every 5 seconds 1 2 3 How to use the Earbuds FUNCTION ACTION Left/Right Ear Single Tap Pause media / Play media Left Ear Double Tap Answer call / hang up call / previous Track Right Ear Double Tap Answer call / hang up call / next Track Left/Right Ear Triple Tap Activate voice assistant Left/Right Ear Press 2s Reject Call / switch between ANC on/APT on/ANC off Left/Right Ear Press 12s Factory reset Left/Right Ear Quadruple Tap When connected to the phone,Press 4 times to enter the gaming mode and another 4 times to exit. Certification information Common part:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. U.S. FCC Part 15 Regulatory Information 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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: 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. Canada Regulatory Information This device complies with Innovation, Science, and Economic Development Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:

(1) this device may not cause interference, and

(2)this device must accept any interference, including interference that may cause undesired operation of the device. Le prsent appareil est conforme aux CNR d'Innovation, Sciences et Dveloppement conomique Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes :

(1) l'appareil ne doit pas produire de brouillage, et

(2) l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. The device is compliance with RF exposure guidelines, users can obtain Canadian information on RF exposure and compliance. Le prsent appa reil est conforme aux directives dexposition RF, les utilisateurs peuvent acqurir les informations correspondantes sur lexposition aux radiofrquences et sur la conformit de lappareil. EU Regulatory Information Support Frequency Bands and Power:

BT/BLE 2402-2480 MHz<1dBm The simplified EU declaration of conformity referred to in Article 10(9) shall be provided as follows:

Hereby, [Grandstream Networks, Inc.] declares that the radio equipment type [GUV3060] is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: www.grandstream.com 4 5 6 Grandstream Networks, Inc. 126 Brookline Ave, 3rd Floor Boston, MA 02215 USA Voice: (617) 566-9300 Fax: (617) 249-1987 www.grandstream.com IC: 11964A-GUV3060 FCC ID: YZZGUV3060 For Certification, Warranty and RMA information, please visit www.grandstream.com

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ210118014-RF EXHIBIT A - FCC ID LABEL AND LOCATION FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Grandstream Networks, Inc. 126 Brookline Ave, 3rd Floor Boston, MA 02215, USA Tel: 1-617-5669300 Fax: 1-617-2491987 Email: Nwei@grandstream.com Declaration Date: 2021/04/17 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Our product, True Wireless Earbuds, model: GUV3060, FCC ID: YZZGUV3060 is a twins earphone that has a left earphone and a right earphone. The layout of the left earphone and the right earphone is same. So only choose the one of two earphones to test. Sincerely, Signature:

Ning Wei Manager

Grandstream Networks, Inc. 126 Brookline Ave, 3rd Floor Boston, MA 02215, USA Tel: 1-617-5669300 Fax: 1-617-2491987 Email: Nwei@grandstream.com Date: 2021/04/17 FCC ID Cover Letter We, Grandstream Networks, Inc., hereby submit justification for placing the FCC ID in the associated user manual and charging case. According to the FCC Regulation and Guidance (KDB Publication 784748 D01 v09r01) allows for the FCC ID to be moved to the user manual and charging case if the device is unquestionably too small for the FCC ID to be printed. Referring to the above quote, as the device is too small for the label (FCC ID: YZZGUV3060) to be printed. The FCC ID will be moved to user manual and charging case. The details are as below:

A. Side surface (A): The side surface does not provide enough physical space to fit the printing of the FCC ID according to below reference picture. B. Top cover (B): The top cover does not provide enough physical space to fit the printing of the FCC ID according to below reference picture. Conclusion: Based on the above description of area A to B, we conclude that the device is unquestionably too small for enabling the FCC ID to be printed onto any surface. We therefore request to move the FCC ID to the user manual and charging case. Best regards, Ning Wei Manager

Grandstream Networks, Inc. 126 Brookline Ave, 3rd Floor Boston, MA 02215, USA Tel: 1-617-5669300 Fax: 1-617-2491987 Email: Nwei@grandstream.com Date: 2021-03-12 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC Confidential Authorization Subject: Confidentiality Request regarding application for certification of FCC ID: YZZGUV3060 In accordance with Sections 0.457 and 0.459 of the Commissions Rules, Grandstream Networks, Inc. hereby requests long-term confidential treatment of information accompanying this application as outlined below:

The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Block Diagram Schematics Operation Description Sincerely Yours, Signature:

Ning Wei Manager