Side by side comparison and review of Sennheiser CX 400BT and Bose QuietComfort. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
DESIGN AND DIMENSIONS | Sennheiser CX 400BT | Bose QuietComfort |
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Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
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Dimensions & Weight Details | Earbud: 6 g Charging case: 37 g |
Earbud: 2.59 cm x 2.69 cm x 3.91 cm / 8.5 g Charging case: 8.89 cm x 5.08 cm x 3.18 cm |
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Colour | White | Black | Blue stone | Triple black | Soapstone | |
Body Material | - | Plastic, polymer | |
Protection | - | Sweat-resistant, IPX4, water-resistant | |
Design | - | Sports | |
Recommended Use | Portable electronics | Portable electronics | |
Bluetooth Range (Operating Distance) | - | 9.144 m |
SOUND QUALITY | Sennheiser CX 400BT | Bose QuietComfort |
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Headphones Form Factor | In-ear | In-ear | |
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Headphones Technology | Dynamic | - | |
Connectivity Technology | Wireless | Wireless | |
Wireless Technology | Bluetooth | Bluetooth | |
Bluetooth Version | Bluetooth 5.1 | Bluetooth 5.1 | Both headphones have the same Bluetooth version. |
Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
Bluetooth Audio Codec | SBC, AAC, aptX | SBC, AAC | |
Active Noise Cancelling | - | Yes | Bose QuietComfort are equipped with active noice cancellation. |
Active Noise Cancelling Technology | - | Acoustic Noise Cancelling | |
Noise Isolating | - | Yes | Bose QuietComfort are equipped with a noise isolating function. |
Sound Output Mode | Stereo | Stereo | |
Frequency Response | 5 - 21000 Hz | - | |
Total Harmonic Distortion (THD) | 0.08% | - | |
Max Sound Pressure | 107 dB | - | |
Diaphragm | 7 mm | - | |
Features | - | ActiveSense technology, Aware Mode |
MICROPHONE | Sennheiser CX 400BT | Bose QuietComfort |
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Form Factor | Built-in | Built-in | |
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Noise Cancelling | - | Yes | Bose QuietComfort microphone can cancel out ambient noise. |
Microphones Included | - | 4 |
REMOTE CONTROL | Sennheiser CX 400BT | Bose QuietComfort |
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Controls | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset | Volume, answer/end, play/pause, reject call, ANC mode |
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CABLE | Sennheiser CX 400BT | Bose QuietComfort |
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Cable Type | USB-C to USB-A cable - detachable - straight - 25 cm | USB-C charge cable - detachable - 30.5 cm |
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FEATURES | Sennheiser CX 400BT | Bose QuietComfort |
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Features | Voice alerts, touch control | Touch control | |
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Intelligent Assistant | Siri, Google Assistant | - |
BATTERY AND CHARGING | Sennheiser CX 400BT | Bose QuietComfort |
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Battery Type | Headphone battery rechargeable - Lithium Ion | 2 x headphone battery rechargeable - Lithium Ion - - wireless charging | |
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Battery Capacity | 55 mAh | 122 mAh | Bose QuietComfort have a higher battery capacity than Sennheiser CX 400BT. |
Battery Life | 7 hour(s) | 6 hour(s) | Sennheiser CX 400BT lasts longer on a single charge than the Bose QuietComfort. |
Battery Life Details | Continuous playback (50% volume): up to 7 hours Continuous playback (with included charging case): up to 20 hours |
Continuous playback: up to 6 hours Continuous playback (with included charging case): up to 18 hours |
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Wireless Charging Standards | - | Qi | |
Charging Time | 1.5 hour(s) | 2 hours | Sennheiser CX 400BT recharge faster than Sennheiser CX 400BT. |
Included Qty | 2 | 2 |
WIRELESS LINK | Sennheiser CX 400BT | Bose QuietComfort |
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Radio Transmitter Power | 10 mW | - |
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OTHERS | Sennheiser CX 400BT | Bose QuietComfort |
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Included Accessories | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | 3 pairs of ear tips, wireless charging case | |
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Compliant Standards | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU | IPX4 | |
Service & Support | - | Limited warranty - 1 year |