In depth comparison and review of Bowers & Wilkins PI3 and Sennheiser CX 400BT. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Bowers & Wilkins PI3 | Sennheiser CX 400BT |
|---|
| Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | 40 cm | - | |
| Width | 3 cm | - | |
| Depth | 4 cm | - | |
| Weight | 31.8 g | - | |
| Dimensions & Weight Details | - | Earbud: 6 g Charging case: 37 g |
|
| Colour | Blue | Gold | Space grey | White | Black | |
| Protection | Water-resistant | - | |
| Recommended Use | Portable electronics | Portable electronics |
| SOUND QUALITY | Bowers & Wilkins PI3 | Sennheiser CX 400BT |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Balanced armature | 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 Bowers & Wilkins PI3. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP), Generic Attribute Profile (GATT) | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | aptX | SBC, AAC, aptX | |
| Noise Isolating | Yes | - | Bowers & Wilkins PI3 are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 10 - 30000 Hz | 5 - 21000 Hz | Bowers & Wilkins PI3 offer a larger frequency range than Sennheiser CX 400BT. |
| Total Harmonic Distortion (THD) | <0.3% | 0.08% | Sennheiser CX 400BT have lower total harmonic distortion than Bowers & Wilkins PI3. |
| Max Sound Pressure | - | 107 dB | |
| Diaphragm | 9.2 mm | 7 mm | Bowers & Wilkins PI3 have a thicker diaphragm than Sennheiser CX 400BT. |
| Features | Dual driver | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Bowers & Wilkins PI3 | Sennheiser CX 400BT |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - |
| REMOTE CONTROL | Bowers & Wilkins PI3 | Sennheiser CX 400BT |
|---|
| Controls | Volume | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset |
|---|
| CABLE | Bowers & Wilkins PI3 | Sennheiser CX 400BT |
|---|
| Cable Type | USB-C to USB-A cable - 20 cm | USB-C to USB-A cable - detachable - straight - 25 cm |
|---|
| FEATURES | Bowers & Wilkins PI3 | Sennheiser CX 400BT |
|---|
| Features | - | Voice alerts, touch control | |
|---|---|---|---|
| Intelligent Assistant | - | Siri, Google Assistant |
| BATTERY AND CHARGING | Bowers & Wilkins PI3 | Sennheiser CX 400BT |
|---|
| Battery Type | Headphone battery rechargeable | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 55 mAh | |
| Battery Life | 8 hour(s) | 7 hour(s) | Bowers & Wilkins PI3 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 | Bowers & Wilkins PI3 | Sennheiser CX 400BT |
|---|
| Radio Transmitter Power | - | 10 mW |
|---|
| OTHERS | Bowers & Wilkins PI3 | Sennheiser CX 400BT |
|---|
| Included Accessories | Carrying pouch, 3 pairs of ear tips (small, medium, large), USB-C charging cable | 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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