Sennheiser CX 400BT
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Premium True Wireless in-ear headphones with built-in microphones. They are distinguished by high sound quality, which is ensured by the high-tech design of branded dynamic drivers with neodymium magnets and support for aptX and AAC audio codecs. The latter guarantee flawlessly accurate transmission of digital audio signal compressed without loss of quality by FLAC or Apple Lossless compressors.
Due to their low weight (6 g each) and compact size, they do not create any problems during transportation and storage. The manufacturer claims the reproduction of an extended frequency range (from 5 Hz to 21 kHz), high sensitivity and impressively low harmonic distortion. Together, these characteristics make the Sennheiser CX 400BT headphones capable of delivering balanced and highly detailed sound suitable for all types of music. Built-in microphones turn them into a solid wireless headset for voice communication in cellular networks. The equalizer in the Sennheiser Smart Control mobile app lets you fine-tune the sound, while the podcast mode enhances the quality of your spoken word.
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Sennheiser 2025 - new arrivals, bestsellers, and the most relevant models Sennheiser.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Sennheiser 2025 - new arrivals, bestsellers, and the most relevant models Sennheiser.
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Series Sennheiser CX (in-ear)Compare using chart →
in-ear, wireless, true wireless, Bluetooth v 5.2, AAC, aptX, active noise cancellation, waterproof, 5 – 21000 Hz, battery: up to 6 h
in-ear, wireless, true wireless, Bluetooth v 5.2, AAC, aptX, waterproof, 5 – 21000 Hz, 16 Ohm, battery: 55 mAh, up to 9 h, with case + 27 h
in-ear, wireless, true wireless, Bluetooth v 5.1, AAC, aptX, 5 – 21000 Hz, battery: 60 mAh, up to 7 h, with case + 20 h
for active sports, in-ear, wireless, Bluetooth v 4.2, AAC, aptX, waterproof, 17 – 21000 Hz, 16 Ohm, battery: up to 6 h
Video reviews
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We recommendCompare using chart →
in-ear, wireless, true wireless, Bluetooth v 5.3, AAC, LDAC, active noise cancellation, voice assistant, waterproof, 20 – 40000 Hz, 16 Ohm, battery: 73 mAh, up to 9 h, with case + 28 h
in-ear, wireless, true wireless, Bluetooth v 5.0, active noise cancellation, 20 – 20000 Hz, 32 Ohm, battery: 60 mAh, up to 5 h
in-ear, wireless, true wireless, Bluetooth v 5.2, AAC, aptX, voice assistant, battery: up to 9.5 h, with case + 29 h
in-ear, wireless, true wireless, Bluetooth v 5.0, waterproof, 20 – 20000 Hz, 16 Ohm, battery: up to 9.5 h
in-ear, wireless, true wireless, Bluetooth, active noise cancellation, waterproof, battery: up to 6 h, with case + 26 h
in-ear, wireless, true wireless, Bluetooth v 5.2, AAC, aptX, waterproof, battery: 35 mAh, up to 7 h, with case + 35 h
in-ear, wireless, true wireless, Bluetooth v 5.0, 9 – 22000 Hz, battery: up to 6.5 h, with case + 26 h
in-ear, wireless, true wireless, Bluetooth v 5.2, AAC, LDAC, active noise cancellation, waterproof, 20 – 40000 Hz, 16 Ohm, battery: 48 mAh, up to 5.5 h, with case + 28 h
in-ear, wireless, true wireless, Bluetooth v 5.2, AAC, LHDC, aptX, game mode, voice assistant, waterproof, 20 – 20000 Hz, 32 Ohm, battery: 65 mAh, up to 7 h, with case + 21 h
in-ear, wireless, true wireless, Bluetooth v 5.3, AAC, active noise cancellation, voice assistant, waterproof, battery: up to 10 h, with case + 30 h
in-ear, wireless, true wireless, Bluetooth v 5.2, active noise cancellation, voice assistant, waterproof, 20 – 20000 Hz, 16 Ohm, battery: 65 mAh, up to 8 h, with case + 6 hours with Adaptive ANC
