Side by side comparison and review of Sennheiser CX 150BT and Sennheiser CX 400BT. 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 150BT | Sennheiser CX 400BT |
|---|
| Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 12 g | - | |
| Dimensions & Weight Details | - | Earbud: 6 g Charging case: 37 g |
|
| Colour | Black | White | White | Black | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | 10 m | - |
| SOUND QUALITY | Sennheiser CX 150BT | Sennheiser CX 400BT |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.1 | Sennheiser CX 400BT have a more advanced version of Bluetooth than Sennheiser CX 150BT. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | SBC, AAC | SBC, AAC, aptX | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 17 - 20000 Hz | 5 - 21000 Hz | Sennheiser CX 400BT offer a larger frequency range than Sennheiser CX 150BT. |
| Total Harmonic Distortion (THD) | 0.5% | 0.08% | Sennheiser CX 400BT have lower total harmonic distortion than Sennheiser CX 150BT. |
| Impedance | 28 Ohm | - | |
| Max Sound Pressure | 100 dB | 107 dB | |
| Diaphragm | - | 7 mm |
| MICROPHONE | Sennheiser CX 150BT | Sennheiser CX 400BT |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphone Operation Mode | Omni-directional | - |
| REMOTE CONTROL | Sennheiser CX 150BT | Sennheiser CX 400BT |
|---|
| Controls | 3-button remote | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset |
|---|
| CABLE | Sennheiser CX 150BT | Sennheiser CX 400BT |
|---|
| Cable Type | USB-C charge cable | USB-C to USB-A cable - detachable - straight - 25 cm |
|---|
| FEATURES | Sennheiser CX 150BT | Sennheiser CX 400BT |
|---|
| Features | - | Voice alerts, touch control | |
|---|---|---|---|
| Intelligent Assistant | - | Siri, Google Assistant |
| BATTERY AND CHARGING | Sennheiser CX 150BT | Sennheiser CX 400BT |
|---|
| Battery Type | Headphone battery rechargeable | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 55 mAh | |
| Battery Life | 10 hour(s) | 7 hour(s) | Sennheiser CX 150BT lasts longer on a single charge than the Sennheiser CX 400BT. |
| Battery Life Details | - | Continuous playback (50% volume): up to 7 hours Continuous playback (with included charging case): up to 20 hours |
|
| Charging Time | - | 1.5 hour(s) | |
| Included Qty | - | 2 |
| WIRELESS LINK | Sennheiser CX 150BT | Sennheiser CX 400BT |
|---|
| Radio Transmitter Power | - | 10 mW |
|---|
| OTHERS | Sennheiser CX 150BT | Sennheiser CX 400BT |
|---|
| Included Accessories | 4 pairs of ear tips (XS, S,M, L) | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | |
|---|---|---|---|
| Compliant Standards | - | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU | |
| Service & Support | Limited warranty - 2 years | - |
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