HUMBOLDT T20 Wireless Earbuds User Manual

**HUMBOLDT T20 Wireless Earbuds User Manual

**

Thank you for purchasing our product. This manual addresses the safety guidelines, warranty, and operating instructions. Please review this manual thoroughly before operating your device.

Package Contents

1. Wireless earbuds x 1 pair (L / R)
2. Charging case x 1
3. Ear tips x 3 pairs (S / M / L; M size ear tips pre-installed)
4. Ear wings x 3 pairs (S / M / L; M size ear wings pre-installed)
5. USB-C charging cable x 1
6. User manual x 1
7. Quick start guide x 1

At a Glance

Charging Case

Earbuds

Earbuds LED Indicator Guide

Charging Case LED Indicator Guide

Press the function button of the charging case to check the charging case battery level.

Using the Earbuds

Charge the earbuds

1. Put the earbuds into the charging case.
2. Close the case lid.

Notes:

• Fully dry off the earbuds before charging.
• The earbuds will not be off and charge if you don’t close the charging case lid. Therefore, please close the lid when putting earbuds back for charging.
• When the earbuds have a battery percentage of less than 10%, the earbuds will give a voice prompt every one minute.

Charge the charging case

1. Plug the small end of the USB-C cable into the USB-C port of the charging case.
2. Plug the other end into a USB wall charger or computer (DC 5V) that is powered on.

Notes:

• It takes approximately 1.5 hours to fully recharge the earbuds.
• Fully charge both the earbuds and the charging case before the first-time using.
• The earbuds and the charging case charge simultaneously. The charging case can be used as a standalone charger.

Power on & off

Power on: Open the charging case.
Power off: Put the earbuds back into the charging case and dose the case lid.

Pair

1. Make sure the earbuds and your Bluetooth device are next to each other or within 3 feet and there are no obstacles between.
2. Open the charging case and the earbuds enter pairing mode.
3. Turn on the Bluetooth of your Bluetooth device.
4. In the list of found Bluetooth devices in your Bluetooth device, choose 720″ to pair.

Connect to other devices

1. Put the earbuds back into the charging case.
2. Press and hold the function button of the charging case for 3 seconds and the earbuds enter pairing mode.
3. Choose “T20” in your device to pair.

Notes:

• The two earbuds will automatically connect with each other when you open the charging case. But if the TWS connection fails, put the earbuds back into the charging case and press the function button of the case 3 times (the charging case indicator flashes white and orange alternately for 5 seconds and goes off).
• The earbuds will directly enter pairing mode the first time you open the charging case.
• Each time when earbuds are on, they will automatically connect to your last successfully connected device if available within the Bluetooth range.
• When the earbuds are on but not paired with a Bluetooth device, they will be automatically off in 10 minutes.
• Mono mode: When Bluetooth connected, you can use either one of the earbuds only by putting the other one back into the charging case and closing the lid.

Button controls

earbud for 2 seconds.
Answer / End a call| Double-tap the touch button of either earbud.
Reject a call| Tap and hold the touch button of either earbud for 2 seconds.
Activate / Deactivate Siri or other voice assistant software| Triple-tap the touch button of either earbud.

Reset the earbuds

1. Put the earbuds back into the charging case.
2. Press and hold the function button of the charging case for 10 seconds until the charging case indicator flashes green 5 times.

Cleaning the Earbuds and Charging Case

The earbuds and charging case may require periodic cleaning.

Earbud nozzles|  Clean only with a dry, soft cotton swab or equivalent.
Note: Never insert any cleaning tool into the nozzle.
---|---
Charging pins (on earbuds and case)| To prevent rusting, regularly clean with a dry, soft cotton swab or equivalent.
Charging case| Clean only with a dry, soft cotton swab or equivalent.

Trouble Shooting

Q: Pairing fails.

A:

1. Put the earbuds back into the charging case and close the lid.
2. Open the case, the earbuds are automatically on and enter pairing mode.
3. Choose “T20” in your Bluetooth device to pair.

If the pairing still fails, check the following points:

• Make sure the earbuds and your Bluetooth device are next to each other or within 3 feet and there are no obstacles between.
• There are no signal interference nearby (check the “Connection is not stable” part for signal interference conditions).
• Try to reboot your Bluetooth device.

Q: I paired the earbuds with my phone before, but I failed to pair them with my phone again.

A: Turn on the Bluetooth of your phone and in “MY DEVICES”, choose 720″ and tap “0” —* “Forget This Device”. Then pair the earbuds with your phone again.

Q: Connection is not stable.

A: Bluetooth signal is transmitted wirelessly and signals can be affected, which results in intermittent sound of earbuds, in the following conditions:

• The distance between the earbuds and your Bluetooth device is at the edge of the Bluetooth pairable distance.
• Transmitted signals encounter obstacles or human body blockage.
• There are high-power electronic devices nearby.
• There are other Bluetooth devices and are being turned on/off nearby.

To resume stable connection between the earbuds and your Bluetooth device, try to avoid the above conditions and do the pairing again following the steps in the pairing fails part.

Specifications

Playtime (varies by
volume level and
content)| Up to 5 hours per charge and 30 hours with charging case
Bluetooth Range| 10 meters / 33 feet
Supporting Protocols| A2DP / HFP / HSP /AVRCP
Waterproof Rate| IPX5
Working Temperature| -10°C to 40°C

SAFETY AND WARRANTY

Important safety instructions

• Use of earbuds will impair your ability to hear other sounds. Use caution while using your earbuds when you are engaging in any activity that requires your full attention.

• If you have a pacemaker or other electrical medical devices, consult your physician before using this product.

• This product is not a toy — never allow children to play with this product. The bags themselves or the many small parts they contain may cause choking if ingested.

• Never try to dismantle the product yourself, or push objects of any kind into the products, as this may cause short circuits which could result in a fire or electric shock.

• None of the components can be replaced or repaired by users. Only authorized dealers or service centers may open the product.

• Avoid exposing your product to heat and humidity to protect against damage to the product or injury to you.

• Keep all products, cords, and cables away from operating machinery.

• If the product overheats, dropped or damaged, has a damaged cord or plug, or has been dropped in a liquid, discontinue use and contact us.

• Do NOT use in areas where there are explosive hazards.

• Do NOT submerge the product in water. Do NOT expose the product to moving water (e.g., from a faucet, etc.).

• Do NOT wear the earbuds while showering or bathing, or when participating in water sports, e.g., swimming, waterskiing, surfing, etc.

• Leaving the product in hot or cold places, such as in a closed car in the summer and winter conditions, will reduce the capacity and lifetime of the earbuds.

• Use of a power supply or charger that is not recommended or sold by power pack manufacturer may result in a risk of fire or injury. Do not use the charging case in excess of its output range.

• Do not use a charging case that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior resulting in fire, explosion or risk of injury.

• Dispose of the product according to local standards and regulations.
  Remember: Always drive safely, avoid distractions and follow local laws!

• Using the earbuds while operating a motor vehicle, motorcycle, watercraft or bicycle may be dangerous, and is illegal in some jurisdictions, just as use of the earbuds with both ears covered while driving is not permitted in certain jurisdictions. Check your local laws. Use caution while using your earbuds when you are engaging in any activity that requires your full attention. While engaging in any such activity, removing the earbuds from your ear or turning off your earbuds will keep you from being distracted, so as to avoid accident or injury. Do not take notes or read documents while driving.

WARRANTY

We strive to build our products with the highest attention to detail and craftsmanship. However, sometimes there are occurrences of a defect, so we are happy to offer a ONE-year hassle-free warranty to all our devices as we continue to make amazing products. Please contact us if you have any questions about our devices.

Federal Communications Commission (FCC) Statement 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.

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.

Warning: Changes or modifications made to this device not expressly approved by HUMBOLDT TECHNOLOGY (HK) LIMITED may void the FCC authorization to operate this device.

Note: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the user’s authority to operate the equipment.

RF exposure statement:
The transmitter must not be colocated or operated in conjunction with any other antenna or transmitter.

This equipment complies with the FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a Minimum distance of 5mm between the radiator and any part of your body.

NOTE: This equipment has been tested and found to comply with the limits for Class B digital devices, in alignment with section 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.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the 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.

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