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White in-ear headphones with neckband and inline remote

Sennheiser

Sennheiser CX 350BT White In-Ear Headphone

SKU CH-SDJ9-ZJZ2N

Wireless in-ear headphones with Bluetooth 5.0, aptX Low Latency, 10-hour battery life and USB-C charging

  • TypeIn-Ear
  • ColorWhite
  • Frequency Response17Hz-20KHz (-10 dB)
  • THD0.5% (1 kHz, 100 dB SPL)
  • Input Impedance28 ohms
  • ConnectorUSB-C (Charging)
  • Bluetooth 5.0 multipoint pairing connects two devices simultaneously
  • Four-button remote controls music, calls and voice assistants
  • SBC, AAC, aptX and aptX Low Latency codecs deliver detailed audio
  • Up to 10 hours playback with USB-C fast charging
  • Smart Control app adds equaliser, podcast mode and firmware updates

Wireless earphones for daily use

The Sennheiser CX 350BT White is a canal-type in-ear headphone weighing 13g. It connects via Bluetooth 5.0 and supports A2DP, AVRCP, HSP and HFP profiles. Codec support includes SBC, AAC, AptX and AptX Low Latency for audio streaming. A four-button remote handles music, calls and voice assistants.

Check device and charging compatibility

Your source device must support Bluetooth 5.0 or earlier versions for pairing. The earphones charge through a USB-C connector using the supplied cable. Battery life reaches up to 10 hours when using the SBC codec. The Smart Control app requires a compatible smartphone for equaliser adjustments and firmware updates.

Suits commuters wanting app control

This model fits listeners who want multi-connection pairing for two devices and sound customisation through an equaliser. The podcast mode optimises speech clarity for spoken-word content. Buyers who need longer continuous playtime without recharging or prefer over-ear comfort should consider other designs.

Highlights

  • Bluetooth 5.0 multipoint pairing connects two devices simultaneously
  • Four-button remote controls music, calls and voice assistants
  • SBC, AAC, aptX and aptX Low Latency codecs deliver detailed audio
  • Up to 10 hours playback with USB-C fast charging
  • Smart Control app adds equaliser, podcast mode and firmware updates

Specifications

BrandSennheiser
ModelCX 350BT White
TypeIn-Ear
ColorWhite
Frequency Response17Hz-20KHz (-10 dB)
THD0.5% (1 kHz, 100 dB SPL)
Input Impedance28 ohms
ConnectorUSB-C (Charging)
Ear CouplingCanal
Weight13g
Wireless TypeBluetooth Version: 5.0
Supported Profiles: A2DP, AVRCP, HSP, HFP
Codecs: SBC, AAC, AptX, AptX Low Latency
Operating TimeUp to 10 hours (SBC)
Package ContentsCX 350BT earphones
Ear adapter set (XS/S/M/L)
USB-C charging cable
Quick Guide
Safety Guide

Questions about this item

What comes in the box with the CX 350BT and is a USB-C power adapter included?

The package contains the earphones, four pairs of ear adapters in XS, S, M and L, a USB-C charging cable, a quick guide and a safety guide. A USB-C power adapter is not supplied.

Which codec should I choose for the lowest latency when gaming or watching video?

Select aptX Low Latency in the Bluetooth settings of your source device; it is one of the four supported codecs alongside SBC, AAC and standard aptX.

What does the 10-hour battery figure mean in daily use with the default SBC codec?

It provides up to 10 hours of continuous playback on a full charge; using higher-quality codecs such as aptX or aptX Low Latency will reduce that runtime.

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