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Sennheiser CX 400BT True Wireless Earbuds - Black

Sennheiser CX 400BT True Wireless Earbuds - Black

Better sound. Better control. Whether you’re in the mood for calming tunes or crave some thrillin...

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Genuine - Sennheiser CX 400BT / CX 400 True Wireless - Eartips/ Ear Tips - L

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Product Information

Full details

The Sennheiser CX 400BT True Wireless earbuds are designed for music lovers seeking premium sound quality and convenient features on the go. These earbuds offer high-fidelity audio with customizable settings, long battery life, and comfortable wear. A key consideration is the need for the Sennheiser Smart Control App for full feature access. The CX 400BT provides an excellent listening experience with its balance of sound, design and functionality.

All features

ColourBlack
SeriesCX 400BT
Model Part Number44653662175516
BrandSennheiser

Extended Product Information

FAQs

How long does the battery last?

The earbuds provide up to 7 hours of playtime on a single charge. The charging case provides an additional 13 hours, totaling 20 hours of playtime.

What codecs are supported?

The CX 400BT supports SBC, AAC, and aptX™ codecs.

Are the earbuds waterproof?

The earbuds are not waterproof, but they are designed to be sweat-resistant.

Can I control the volume from the earbuds?

Yes, volume can be controlled via the touch controls on the earbuds or through your connected device.

What is the warranty period?

The warranty period is 2 years.

How do I reset the earbuds?

Place the earbuds in the charging case and press and hold the reset button on the case for a few seconds.

Do these earbuds have noise cancellation?

No, these earbuds do not have active noise cancellation.

Can I use the earbuds with any phone?

Yes, as long as your phone has Bluetooth.

Troubleshooting

Earbuds won't turn on.

Ensure the earbuds are charged by placing them in the charging case. If they still don't turn on, try resetting them by placing them in the case and pressing the case's reset button.

Bluetooth connection issues.

Make sure Bluetooth is enabled on your device. Restart the earbuds and your device. If the problem persists, forget the earbuds in your device's Bluetooth settings and re-pair them.

One earbud not working.

Ensure both earbuds are charged and properly seated in your ears. Try resetting the earbuds by placing them in the case and pressing the case's reset button. Check the balance settings in your device's audio settings.

Poor sound quality.

Ensure the earbuds are properly seated in your ears for a good seal. Adjust the equalizer settings in the Sennheiser Smart Control App. Check for any obstructions in the ear tips and clean them if necessary.

Pros and Cons

Pros

  • Excellent sound quality with a balanced profile.
  • Long battery life with charging case.
  • Comfortable and ergonomic design for extended use.
  • Customizable audio settings via the Sennheiser Smart Control App.
  • Bluetooth 5.1 for a stable and reliable connection.

Cons

  • Full feature customization requires the use of the Sennheiser Smart Control App.
  • Touch controls can be sensitive and may require some adjustment.
  • No active noise cancellation.
  • May not fit all ear shapes perfectly, potentially affecting noise isolation.

Setup, Compatibility & Care

Setup

  1. Charging: Charge the earbuds and charging case using the included USB-C cable.
  2. Pairing: Open the charging case, and the earbuds will enter pairing mode. Enable Bluetooth on your device and select "CX 400BT" from the list.
  3. App Installation: Download and install the Sennheiser Smart Control App from the App Store or Google Play Store for advanced customization.

Compatibility

The Sennheiser CX 400BT is compatible with:

  • iOS devices
  • Android devices
  • Any device with Bluetooth 5.1 or later.

Care

  • Cleaning: Use a soft, slightly damp cloth to clean the earbuds and charging case. Avoid excessive moisture.
  • Storage: Store the earbuds in the charging case when not in use to protect them and conserve battery life.
  • Avoid Extreme Temperatures: Do not expose the earbuds to extreme temperatures or humidity to prevent damage.

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