In depth comparison and review of Poly Blackwire C225 and Sennheiser HD 4.50 BTNC Wireless. 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 Blackwire C225 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Product Type | Headset - wired - 3.5 mm jack | Headphones - Bluetooth - wireless - NFC | |
|---|---|---|---|
| Weight | - | 238 g | |
| Headband Material | Metal | - | |
| Recommended Use | Portable electronics, computer | Portable electronics |
| SOUND QUALITY | Poly Blackwire C225 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Foldable | - | Yes | Sennheiser HD 4.50 BTNC Wireless can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.0 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Active Noise Cancelling | - | Yes | Sennheiser HD 4.50 BTNC Wireless are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | NoiseGard active noise compensation | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 18 - 22000 Hz | Sennheiser HD 4.50 BTNC Wireless offer a larger frequency range than Poly Blackwire C225. |
| Total Harmonic Distortion (THD) | - | <0.5% | |
| Sensitivity | - | 113 dB | |
| Impedance | - | 18 Ohm | |
| Magnet Material | - | Neodymium | |
| Features | SoundGuard Technology | Bluetooth aptX technology | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire C225 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Microphone Operation Mode | - | Omni-directional | |
| Frequency Response | 100 - 10000 Hz | 100 - 10000 Hz | The frequency response of the microphones in both headphones is the same. |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Poly Blackwire C225 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Controls | Mute, volume, answer/end | Power on/off, volume control, answer/end, hold, play/pause, next/previous track, reject call, redial |
|---|
| CABLE | Poly Blackwire C225 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Cable Type | Headset cable | Headphones cable - detachable - L shaped - 1.4 m Micro-USB charge cable - detachable |
|
|---|---|---|---|
| Cable Length | - | 1.4 m | |
| Detachable Cable | - | Yes | |
| Plated Connector | - | Gold |
| BATTERY AND CHARGING | Poly Blackwire C225 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Battery Type | - | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 600 mAh | |
| Battery Life | - | 25 hour(s) | |
| Charging Time | - | 2 hour(s) |
| CONNECTIONS | Poly Blackwire C225 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Connector Type | Headset (mini-phone stereo 3.5 mm 4-pole) | Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | Poly Blackwire C225 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Included Accessories | - | Carrying case, micro-USB charging cable | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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