Side by side comparison and review of Poly Blackwire 3325 and Trust Zena. 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 | Poly Blackwire 3325 | Trust Zena |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headphones - Bluetooth - wireless, wired - 3.5 mm jack | |
|---|---|---|---|
| Series | 3300 Series | - | |
| Height | 18.6 cm | 19.5 cm | |
| Width | 21.6 cm | 17.5 cm | |
| Depth | 5.6 cm | 7.3 cm | |
| Weight | 130 g | 186 g | Poly Blackwire 3325 are lighter than Poly Blackwire 3325 headphones. |
| Dimensions & Weight Details | - | Headphone body: 166 g | |
| Earpad Material | Leatherette | Synthetic leather | |
| Protection | Hearing protection | - | |
| Recommended Use | - | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Poly Blackwire 3325 | Trust Zena |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Ear Cups Type | - | Closed | |
| Adjustable Headband | Yes | Yes | |
| Foldable | - | Yes | Trust Zena can be folded. |
| Connectivity Technology | Wired | Wireless, wired | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 5.0 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | - | SBC | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Total Harmonic Distortion (THD) | - | 1% | |
| Sensitivity | 94 dB | - | |
| Impedance | 32 Ohm | 32 Ohm | |
| Max Sound Pressure | - | 100 dB | |
| Diaphragm | 32 mm | 40 mm | Trust Zena have a thicker diaphragm than Poly Blackwire 3325. |
| Magnet Material | - | Neodymium | |
| Features | SoundGuard Technology | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 3325 | Trust Zena |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Microphone Technology | - | Electret condenser | |
| Microphone Operation Mode | - | Omni-directional | |
| Noise Cancelling | Yes | - | Poly Blackwire 3325 microphone can cancel out ambient noise. |
| Frequency Response | 100 - 10000 Hz | 150 - 4000 Hz | Poly Blackwire 3325 offer a larger microphone frequency range than Trust Zena. |
| Sensitivity | -38 dB | - | |
| Microphone Features | - | Echo-cancelling |
| REMOTE CONTROL | Poly Blackwire 3325 | Trust Zena |
|---|
| Controls | Mute, volume, answer/end | Volume, play/pause, next/previous track, voice assistant |
|---|
| CABLE | Poly Blackwire 3325 | Trust Zena |
|---|
| Cable Type | Headset cable | Micro-USB charge cable - detachable Audio cable - detachable |
|---|
| BATTERY AND CHARGING | Poly Blackwire 3325 | Trust Zena |
|---|
| Battery Type | - | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Life | - | 75 hour(s) | |
| Charging Time | - | 3 hour(s) |
| CONNECTIONS | Poly Blackwire 3325 | Trust Zena |
|---|
| Connector Type | USB (4 PIN USB Type A) Headset (mini-phone 3.5mm) |
Headphones (mini-phone stereo 3.5 mm 4-pole) |
|---|
| OTHERS | Poly Blackwire 3325 | Trust Zena |
|---|
| Included Accessories | Carrying pouch | - | |
|---|---|---|---|
| Software Certification | Certified for Microsoft Teams | - | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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