In depth comparison and review of Poly - Plantronics Backbeat Pro 5100 (Right Earbud) 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 | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) | Sennheiser CX 400BT |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 5.8 g | - | |
| Dimensions & Weight Details | Charging case with earphones: 38.6 g | Earbud: 6 g Charging case: 37 g |
|
| Colour | Black | White | Black | |
| Protection | Sweat-resistant, water-resistant | - | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | 10 m | - |
| SOUND QUALITY | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) | Sennheiser CX 400BT |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | - | 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 Poly - Plantronics Backbeat Pro 5100 (Right Earbud). |
| Bluetooth Profiles | Hands-Free Profile (HFP), 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, aptX | |
| Active Noise Cancelling | Yes | - | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | WindSmart technology | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 5 - 21000 Hz | Sennheiser CX 400BT offer a larger frequency range than Poly - Plantronics Backbeat Pro 5100 (Right Earbud). |
| Total Harmonic Distortion (THD) | <3% | 0.08% | Sennheiser CX 400BT have lower total harmonic distortion than Poly - Plantronics Backbeat Pro 5100 (Right Earbud). |
| Sensitivity | 94 dB | - | |
| Impedance | 16 Ohm | - | |
| Max Sound Pressure | - | 107 dB | |
| Diaphragm | 5.8 mm | 7 mm | Sennheiser CX 400BT have a thicker diaphragm than Poly - Plantronics Backbeat Pro 5100 (Right Earbud). |
| MICROPHONE | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) | Sennheiser CX 400BT |
|---|
| Form Factor | Built-in | Built-in |
|---|
| REMOTE CONTROL | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) | Sennheiser CX 400BT |
|---|
| Controls | Mute, volume, answer/end, play/pause, skip track, voice assistant | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset |
|---|
| CABLE | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) | Sennheiser CX 400BT |
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| Cable Type | Micro-USB charge cable - detachable | USB-C to USB-A cable - detachable - straight - 25 cm |
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| FEATURES | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) | Sennheiser CX 400BT |
|---|
| Features | Voice alerts | Voice alerts, touch control | |
|---|---|---|---|
| Intelligent Assistant | - | Siri, Google Assistant | |
| Additional Functions | DSP | - |
| BATTERY AND CHARGING | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) | Sennheiser CX 400BT |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 60 mAh | 55 mAh | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) have a higher battery capacity than Sennheiser CX 400BT. |
| Battery Life | 6.5 hour(s) | 7 hour(s) | Sennheiser CX 400BT lasts longer on a single charge than the Poly - Plantronics Backbeat Pro 5100 (Right Earbud). |
| Battery Life Details | Continuous playback: up to 6.5 hours Continuous talk: up to 4 hours Continuous playback (with included charging case): up to 19 hours |
Continuous playback (50% volume): up to 7 hours Continuous playback (with included charging case): up to 20 hours |
|
| Charging Time | 2 hour(s) | 1.5 hour(s) | Sennheiser CX 400BT recharge faster than Poly - Plantronics Backbeat Pro 5100 (Right Earbud). |
| Included Qty | - | 2 |
| WIRELESS LINK | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) | Sennheiser CX 400BT |
|---|
| Radio Transmitter Power | - | 10 mW |
|---|
| OTHERS | Poly - Plantronics Backbeat Pro 5100 (Right Earbud) | Sennheiser CX 400BT |
|---|
| Included Accessories | 2 pairs of ear tips (small, large), charging case (440 mAh) | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | |
|---|---|---|---|
| Compliant Standards | IP54 | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU |
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