Introduction
Thank you for choosing the HIFIMAN TWS450 True Wireless Earphones. These earphones are designed to provide a high-fidelity audio experience with features such as Environmental Noise Cancelling (ENC), Bluetooth 5.3 connectivity, and IPX4 water resistance. This manual will guide you through the setup, operation, and maintenance of your new earphones.
Image: The HIFIMAN TWS450 earphones and their compact charging case, both in white.
Package Contents
Please ensure all items are present in the package:
- HIFIMAN TWS450 Earphones (Left and Right)
- Charging Case
- Eartips (various sizes)
- Type-C Charging Cable
- User Manual (this document)
Image: The HIFIMAN TWS450 earphones securely placed within their open charging case.
Setup
1. Initial Charging
Before first use, fully charge the earphones and charging case. Place both earphones into the charging case and connect the Type-C charging cable to the case and a power source. The indicator lights on the case will show charging status.
2. Pairing with a Bluetooth Device
- Ensure the earphones are in the charging case and the case lid is open.
- On your device (smartphone, tablet, etc.), enable Bluetooth.
- Select "HIFIMAN TWS450" from the list of available Bluetooth devices.
- Once connected, a voice prompt will confirm successful pairing.
Note: The earphones will automatically connect to the last paired device when removed from the case, if Bluetooth is enabled on the device.
Operating Instructions
Wearing the Earphones
Select the appropriate eartip size for a comfortable and secure fit. Insert the earphones into your ears and gently twist until they feel snug. A proper fit is essential for optimal sound quality and noise cancellation.
Image: A person wearing one HIFIMAN TWS450 earbud, demonstrating proper fit.
Touch Controls
The TWS450 earphones feature intuitive touch controls:
- Pause/Play: Touch either earbud twice.
- Previous Track: Triple click the left earbud.
- Next Track: Triple click the right earbud.
- Answer/End Call: Double click either earbud.
- Reject Call: Press and hold either earbud for 2 seconds.
- Activate Voice Assistant: Press and hold either earbud for 2 seconds. (Note: Device must support Voice Assistant function.)
Image: Visual guide to the touch operations for music playback and call management on the TWS450 earphones.
Environmental Noise Cancelling (ENC)
The TWS450 features ENC technology, which uses an AI algorithm to filter out environmental noise during calls, ensuring clearer communication. This feature is automatically active during phone calls.
Image: A graphic illustrating how Environmental Noise Cancelling (ENC) reduces background noise while preserving human voice.
Maintenance
Cleaning
- Regularly clean the earphones and charging case with a soft, dry, lint-free cloth.
- Remove eartips and clean them with mild soap and water, then dry thoroughly before reattaching.
- Avoid using abrasive materials or harsh chemicals.
Storage
When not in use, store the earphones in their charging case to protect them and ensure they remain charged.
Water Resistance
The TWS450 earphones are IPX4 water resistant, meaning they are protected against splashing water from any direction. They are suitable for use during workouts or in light rain. Do not submerge the earphones in water.
Image: The HIFIMAN TWS450 earphones shown with water droplets, highlighting their IPX4 water resistance.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Earphones not pairing | Bluetooth is off; earphones not in pairing mode; device already connected to another earphone. | Ensure Bluetooth is on. Place earphones in case, open lid to enter pairing mode. Forget previous connections on device. |
| No sound from one earbud | Low battery; earbud not properly connected. | Charge both earbuds. Re-pair the earphones. |
| Poor sound quality | Improper fit; low battery; interference. | Adjust eartips for a secure fit. Charge earphones. Move away from sources of interference. |
| Earphones not charging | Cable issue; dirty charging contacts; case battery empty. | Check charging cable and adapter. Clean charging contacts on earphones and case. Charge the case. |
If the issue persists, please contact HIFIMAN customer support.
Specifications
- Model: TWS450
- Bluetooth Version: 5.3
- Driver Type: Audiophile-grade Dynamic Driver
- Noise Cancellation: Environmental Noise Cancelling (ENC)
- Battery Life: Approximately 5 hours (earbuds), 20 hours total with charging case
- Charging Port: USB Type-C
- Water Resistance: IPX4
- Earphone Weight: Approximately 3.5g per earbud
- Item Weight: 1.41 ounces (total product)
- Manufacturer: HIFIMAN
Warranty and Support
HIFIMAN products come with a limited warranty. For detailed warranty information, please refer to the warranty card included in your product packaging or visit the official HIFIMAN website. For technical support, troubleshooting assistance, or service inquiries, please contact HIFIMAN customer service through their official channels.
You can visit the HIFIMAN Store on Amazon for more product information and support resources.
