HTC NE21 Wireless Earphones 21

Product Specifications

Model: HTC NE21

Bluetooth: Range: 10 m, Version: 6.0

Speaker: Diameter: 14.2 mm, Impedance: 16 Ω

Earphone Power: Input: 5 V=30 mA, Battery capacity: 30mAh, Battery life: ≈4 hours, Charging time: ≈1.5 hours

Charging Case Power: Input: 5V=300 mA, Output: 5 V=60 mA, Battery capacity: 300mAh, Charging time: ≈1.5 hours

The charging case can charge the earphones approximately 4 times when fully charged.

What's in the box

• 2 Earphones
• Charging case
• USB-C cable
• Quick Start Guide
• Lanyard

Components

• Earphone LED
• Touchpad
• Charging contact
• Earphone speaker
• Charging case power display
• USB Type-C port

Power on and off

Power on: Taking the earphones out of the charging case will automatically turn them on. To manually turn on each earphone, press and hold the touchpad for three seconds.

Power off: Placing the earphones in the charging case will automatically turn them off. To manually turn off each earphone, press and hold the touchpad for five seconds.

Note: If the earphones are not paired with a Bluetooth device within three minutes after powering on, they will automatically power off. They will also power off after three minutes if the paired Bluetooth device moves out of the effective connection range and has not reconnected.

Take out and pair the earphones

If you're using the earphones for the first time, remove both from the charging case. The LED on one earphone will blink white and cyan alternately, indicating that they are in pairing mode.

Note:

• If the earphones have not been paired with each other, they will automatically enter pairing mode when turned on. You'll hear two beeps when pairing is successful.
• If the earphones have been paired before, they will automatically reconnect to each other when turned on. You'll hear a beep when they connect.

How to put on the earphones

[Diagram showing how to insert earphones into ears]

Connect to Bluetooth device

On your device, turn on Bluetooth and choose to connect to "HTC NE21".

[Diagram showing smartphone Bluetooth settings]

Basic operations

Music Mode

• Play/Pause: Tap either earphone once (x1)
• Volume up: Tap the right earphone twice (x2)
• Volume down: Tap the left earphone twice (x2)
• Previous track: Tap the left earphone three times (x3)
• Next track: Tap the right earphone three times (x3)

Call Mode

• Answer/End call: Tap either earphone once (x1)
• Reject call: Press and hold either earphone for two seconds (2s)
• Activate voice assistant: Press and hold the left earphone for two seconds (2s)

Note: When using a single earphone only, pressing and holding the active earphone for two seconds will activate the voice assistant.

Game Mode

Switch between Game and Music modes: Music mode is the default mode. Press and hold the right earphone for two seconds to switch between modes. (The louder notification sound indicates Game mode.)

Note: Mode switching is disabled when you are using a single earphone only.

Indicator LEDs

Earphone LED

• Status: Both earphones: Powered on, LED: Blinking white and cyan
• Status: Single earphone: Unpaired, LED: Blinking white and cyan
• Status: Charging, LED: Solid white
• Status: Paired or fully charged, LED: Off

Charging case Power display

• Status: Earphones charging, Display: Flashing
• Status: Case charging, Display: Shows 100%
• Status: Case fully charged, Display: Solid

How to reset the earphones

If the earphones fail to pair or reconnect to each other, reset them by tapping both earphones five times simultaneously. After hearing four "beep" prompts, the earphones will automatically power off. Place both earphones back into the charging case, then take them out again. The earphones will automatically pair. You can then connect to Bluetooth devices.

Use cases for reset:

• When both earphones cannot pair or only one side has sound.
• When using a single earphone to connect to different Bluetooth devices.
• When clearing all previously connected Bluetooth devices.

Note: Resetting the earphones will clear the Bluetooth pairing history.

Special Tip: If a single earphone has no sound or cannot be paired, please follow the reset procedure above.

Important Safety Instructions

General safety instructions

• Use the product and store it in a clean environment that is free from extreme temperature, pressure, and humidity. Ensure the product is stored in a location where it cannot be bent or squeezed.
• Repairs and replacements should only be performed by authorized after-sales service staff. Do not attempt to disassemble or replace any part of the product yourself to prevent injuries or damage to the device. Any unauthorized modification to the product voids the warranty.
• Only use the product in environments where Bluetooth transmission is permitted.

Personal safety instructions

• Do not use the product if it is obviously defective or exhibits abnormalities such as bulging or excessive heating.
• Do not use the product when performing high-risk tasks that require your full attention.
• For your hearing protection, do not listen at high volume for long periods.
• Keep the product and its packaging out of reach of children and pets to prevent accidents such as swallowing and choking.

Battery safety instructions

• Keep the product away from prolonged exposure to heat sources such as open fires or direct sunlight.
• Only store the product in environments with ambient temperatures of 0 to 35°C (32 to 95°F).
• Do not use or store the product in dust-prone, smoke-prone, high-temperature, high-pressure, or highly humid environments.
• Keep the product dry and away from liquids or moisture.
• Only use an FCC or CCC-certified charger with an output voltage of 5 V/1 A DC.
• Do not use the product while charging.
• Do not leave the product charging for longer than 8 hours.
• Dispose of the product responsibly according to your local waste management guidelines.

Legal notice

Trademarks and permissions: HTC and the HTC logo are trademarks of HTC Corporation and used under license by Shenzhen Brands World Technology Co., Ltd. Copyright © 2025 Shenzhen Brands World Technology Co., Ltd. All rights reserved. THIS DOCUMENT IS FOR INFORMATION PURPOSES ONLY AND DOES NOT CONSTITUTE ANY KIND OF WARRANTY.

FCC Information

FCC ID: 2BHJR-NE21

FCC Caution: 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.

RF warning for Portable device: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

US Representative

Company Name: MIRAMONT SOLUTIONS LLC

Company Address: 34218 HOURGLASS ST, TEMECULA, CA 92592 United States

FRN: 0036313369

Agent name: Wenyi Wang

Title: CEO

Email Address: wenyiwang@miramontsolutions.com

Telephone: 951 401 3633