2AN4C-233621HUSHHUSH ANC EVT

QUICK START GUIDE HUSH Type-C charging cable x1 What's In The Box Right Earmuff Button / Interface Position User guide x1 Power Button Touch Pad Function Button Type-C Port Headphone x1 Light Indicators Power On / Power Off Pairing Power on / off: white light turns off after 1 second No device connected after booting: white light flashes quickly During Bluetooth pairing: red and white lights flash fast Bluetooth is connected: white light flashes slowly Low battery: red light flashes quickly Charging (0-99%): the red light is always on Charging completed: white light is always on Power On: In the off state, press and hold the power button for 2 seconds to power on, the white indicator light flashes. Power Off: In the power-on state, press and hold the power button for 2 seconds to power off, the indicator light will go out. 1.Pair and connect for the first time ① When the headphone is off,Press and hold the power button for 2 seconds and the voice prompt "Power on" will be displayed. The red and white lights flash alternately, which means that the pairing state is entered. and you will hear a voice prompt “Looking for device”. ② Turn on the Bluetooth on the phone and find "233621 ® Hush" to connect. Call Function 1. When calling ①Press the right earmuff touch panel twice to answer the call. ② Press the right earmuff touch panel twice again to hang up the phone. 2. When the call is active ①Press the right earmuff touch panel twice to hang up the phone. ②Press the Function button button once / twice to adjust the volume. 3. Call switching ①Press the right earmuff touch panel twice to hold the current call and connect with the incoming call. ②Longpress the right earmuff touch panel once to continue the current call and reject the incoming call. ③While the call is in progress, press the right earmuff touch panel twice to hang up the ongoing call. Notice: Some of the mobile phone brands and models may differ in operation. For queries contact sales for support. Noise Cancellation Mode: Our noise canceling technology and optimized passive isolation can suppress wide-band ambient noise. Ambient Mode: Allows you to hear sounds around you even while wearing the headphone. 2.Turn on to reconnect Noise Cancellation Mode And Ambient Modes Right Earmuff Touch Function ① Manually disconnect and reconnect: a. The mobile phone end actively disconnects Bluetooth, the headset enters the connectable state, 15 minutes If there is no mobile phone connection in the clock, it will automatically shut down; b. The headset end actively disconnects Bluetooth, the headset enters the pairing state, if there is no mobile phone connection within 5 minutes, then exit the pairing state and enter the connectable state,If there is no mobile phone connection within 10 minutes, it will shut down. Note: Press twice the power button to achieve Bluetooth disconnection and pairable mode. ② Bluetooth connection when out of range. a. The headphone which was out of the Bluetooth range will automatically reconnect if it is back in the range, within 10 minutes of disconnection. b. After 10 minutes, the Bluetooth will have to be manually reconnected. c. After 20 minutes of disconnection outside the Bluetooth range, the headphone will power off. 4.Disconnect and reconnect the Bluetooth When the headphone is off, press and hold the power button for 2 seconds and the voice prompt "Power on" is accompanied by a white light flashing. And the headphone will automatically reconnect to the last device. 3.Re-pair ① When the headphone is on, press the power button for more than 5 seconds, the red and white flash, enter the pairing state, and the red and white lights flash with the prompt tone. ② Turn on bluetooth on the phone to connect. Cycle through Noise Cancellation Mode with Ambient Mode ON or OFF Press and hold 2 seconds Function Specific operation method Press the touch panel twice Press the touch panel twice Long press touch panel Press the function button button twice Press the function button button once Press and hold the function button button for 2 seconds Touch and hold for 2 seconds Press the touch panel once Press the touch panel thrice Music Play Pause Previous song Next song Answer / hang up Noise cancellation Ambient sound Open/Close Call Volume Voice assistant Reject Volume+ Volume- Open Right earmuff Power on: “Power on”. Power off: “Power off”. Pairing successful: “Audio connected”. Connection failure: “Audio disconnected”. Bluetooth pairing: “Looking for device”. Pairing failure: “Device not found”. Low battery: “Battery low”(<10%). Noise cancellation on: “Noise cancellation on”. Ambient on: “Ambient on” Noise cancellation, Ambient mode are off: “off”. Sound Max:“Beep,Beep”. Voice Prompts Charging 1. When the power is less than 10%, the red light flashes quickly and there is plugged sound "Battery is low". 2. When plugged in the charging cable to charge, the red indicator light is on. 3. After fully charged, the indicator light turns solid white. Notice: A. Charge the headphone via computer or certified charger (output 5v/1A), the headphone will be fully charged in 2 hours. B. If the headphone is automatically turned off due to insufficient power, charge the headphone on time. If the headphone is not charged. IMPORTANT! The operation of switches on your hi-fi system may cause clicks which at high volume settings may affect your hearing. Therefore, always set the volume control to minimum before switching between different sources. WARNING! . To guarantee your personal safety, please ensure that these earbuds are not worn kept in the immediate vicinity (close than 15 cm) of a pacemaker. · Do not insert jack plug into electric sockets. · Supervise children when using the device, the product is not a toy. · Earbuds listening at high volume levels particularly over extended periods of time may damage your hearing. ©2020 Shenzhen Grandsun Electronics Co., Ltd. Listen To MusicSpecifications 1. When music is paused Press the righ…

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Shenzhen Grandsun Electronic Co., Ltd. Agent Authorization Company: Shenzhen Grandsun Electronic Co., Ltd. Address: Gaoqiao Industry Zone, Pingdi Town, Longgang District, Shenzhen, China Product Name: HUSH ANC EVT Model Number(s): 233621 Hush Product Description: HUSH ANC EVT We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2020-08-14 Name: Felix Lee Company: Shenzhen Grandsun Electronic Co., Ltd.

Shenzhen Grandsun Electronic Co.,Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-08-14 Subject; Request for Confidentiality FCC ID: 2AN4C-233621HUSH To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely Shenzhen Grandsun Electronic Co.,Ltd. Contact person: Felix Lee

FCC ID Label Location FCC ID: 2AN4C-233621HUSH

Internal Photos OPEN VIEW OF EUT VIEW OF BATTERY INTERNAL VIEW-1 OF EUT INTERNAL VIEW-2 OF EUT INTERNAL VIEW-3 OF EUT INTERNAL VIEW-4 OF EUT INTERNAL VIEW-5 OF EUT INTERNAL VIEW-6 OF EUT INTERNAL VIEW-7 OF EU7 INTERNAL VIEW-8 OF EUT INTERNAL VIEW-9 OF EUT INTERNAL VIEW-10 OF EUT BT Antenna

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description HUSH ANC EVT Model Name 233621 Hush FCC ID 2AN4C-233621HUSH 2. EVALUATION METHOD According to 447498 D01 General RF Exposure Guidance v05 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 3. CALCULATION BR/EDR: P t =2.599dBm=1.82mW The value of the Maximum output power P t is referred to the test report of the CFR47 §15.247. The result for RF exposure evaluation SAR=(1.82mW /5mm) .[√2.402(GHz)]=0.56<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. BLE: P t = -0.529dBm=0.89mW The value of the Maximum output power P t is referred to the test report of the CFR47 §15.247. The result for RF exposure evaluation SAR=(0.89mW /5mm) .[√2.440(GHz)]=0.28<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. 4. CONCLUSION The SAR evaluation is not required.

Report No.: AGC08506200703FE02 Page 28 of 52 11.2. TEST SETUP Radiated Emission Test-Setup Frequency Below 30MHz RADIATED EMISSION TEST SETUP 30MHz-1000MHz RADIATED EMISSION TEST SETUP ABOVE 1000MHz Report No.: AGC08506200703FE02 Page 29 of 52 11.3. LIMITS AND MEASUREMENT RESULT 15.209 Limit in the below table has to be followed Frequencies (MHz) Field Strength (micorvolts/meter) Measurement Distance (meters) 0.009~0.490 2400/F(KHz) 300 0.490~1.705 24000/F(KHz) 30 1.705~30.0 30 30 30~88 100 3 88~216 150 3 216~960 200 3 Above 960 500 3 Note: All modes were tested For restricted band radiated emission, the test records reported below are the worst result compared to other modes. 11.4. TEST RESULT RADIATED EMISSION BELOW 30MHZ The result of the lowest internal use/generated frequency to 30MHz is 20dB less than the limit. Report No.: AGC08506200703FE02 Page 30 of 52 RADIATED EMISSION BELOW 1GHZ EUT HUSH ANC EVT Model Name 233621 Hush Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 2 Antenna Horizontal NO. Freq. [MHz] Level [dBμV/m] Factor [dB] Limit [dBμV/m] Margin [dB] Polarity 1 36.7900 26.83 11.16 40.00 13.17 Horizontal 2 48.4300 25.91 11.71 40.00 14.09 Horizontal 3 133.7900 20.52 14.42 43.50 22.98 Horizontal 4 315.1800 23.91 16.48 46.00 22.09 Horizontal 5 526.6400 30.08 22.77 46.00 15.92 Horizontal 6 836.0700 35.80 29.06 46.00 10.20 Horizontal RESULT: PASS Report No.: AGC08506200703FE02 Page 31 of 52 EUT HUSH ANC EVT Model Name 233621 Hush Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 2 Antenna Vertical NO. Freq. [MHz] Level [dBμV/m] Factor [dB] Limit [dBμV/m] Margin [dB] Polarity 1 48.4300 27.57 11.71 40.00 12.43 Vertical 2 52.3100 26.60 11.49 40.00 13.40 Vertical 3 141.5500 21.02 14.88 43.50 22.48 Vertical 4 358.8300 23.29 18.16 46.00 22.71 Vertical 5 606.1800 30.46 24.42 46.00 15.54 Vertical 6 930.1600 36.46 30.40 46.00 9.54 Vertical RESULT: PASS Note: 1. Factor=Antenna Factor + Cable loss, Margin=Limit-Measurement. 2.All test modes had been tested. The GFSK mode is the worst case and recorded in the report. Report No.: AGC08506200703FE02 Page 32 of 52 RADIATED EMISSION ABOVE 1GHZ EUT HUSH ANC EVT Model Name 233621 Hush Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 1 Antenna Horizontal FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4804.00047.520.0847.674-26.4 peak 4804.00040.310.0840.3954-13.61 AVG 7206.00045.942.2148.1574-25.85 peak 7206.00035.772.2137.9854-16.02 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type EUT HUSH ANC EVT Model Name 233621 Hush Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 1 Antenna Vertical FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4804.00045.660.0845.7474-28.26 peak 4804.00038.280.0838.3654-15.64 AVG 7206.00041.922.2144.1374-29.87 peak 7206.00034.072.2136.2854-17.72 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type Report No.: AGC08506200703FE02 Page 33 of 52 EUT HUSH ANC EVT Model Name 233621 Hush Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 2 Antenna Horizontal FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4880.00047.870.1448.0174-25.99 peak 4880.00040.270.1440.4154-13.59 AVG 7320.00044.692.3647.0574-26.95 peak 7320.00035.712.3638.0754-15.93 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type EUT HUSH ANC EVT Model Name 233621 Hush Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 2 Antenna Vertical FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4880.00046.970.1447.1174-26.89 peak 4880.00039.350.1439.4954-14.51 AVG 7320.00044.712.3647.0774-26.93 peak 7320.00035.272.3637.6354-16.37 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type Report No.: AGC08506200703FE02 Page 34 of 52 EUT HUSH ANC EVT Model Name 233621 Hush Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 3 Antenna Horizontal FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4960.00045.380.2245.674-28.4 peak 4960.00036.490.2236.7154-17.29 AVG 7440.00041.312.6443.9574-30.05 peak 7440.00033.792.6436.4354-17.57 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type EUT HUSH ANC EVT Model Name 233621 Hush Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 3 Antenna Vertical FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4960.00042.460.2242.6874-31.32 peak 4960.00033.530.2233.7554-20.25 AVG 7440.00038.172.6440.8174-33.19 peak 7440.00031.022.6433.6654-20.34 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type RESULT: PASS Note: Other emissions from 1G to 25 GHz are 20dB below the limits. Factor = Antenna Factor + Cable loss - Amplifier gain, Over=Measure-Limit. The “Factor” value can be calculated automatically by software of measurement system. All test modes had been tested. The GFSK mode is the worst case and recorded in the report. Report No.: AGC08506200703FE02 Page 35 of 52 TEST RESULT FOR RESTRICTED BANDS REQUIREMENTS EUT HUSH ANC EVT Model Name 233621 Hush Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 1 Antenna Horizontal PK AV RESULT: PASS Report No.: AGC08506200703FE02 Page 36 of 52 EUT HUSH ANC EVT Model Name 233621 Hush Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 1 Antenna Vertical PK AV RESULT: PASS Report No.: AGC08506200703FE02 Page 37 of 52 EUT HUSH ANC EVT Mo…

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