In depth comparison and review of Sony WH-CH720N and Poly Blackwire 3320-M. 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 | Sony WH-CH720N | Poly Blackwire 3320-M |
|---|
| Product Type | Headphones - Bluetooth - wireless, wired - 3.5 mm jack | Headset - wired - USB-C | |
|---|---|---|---|
| Series | - | Blackwire 3300 series | |
| Height | - | 17.8 cm | |
| Width | - | 15.5 cm | |
| Depth | - | 3.2 cm | |
| Weight | 192 g | 130 g | Poly Blackwire 3320-M are lighter than Sony WH-CH720N headphones. |
| Colour | Black | Blue | White | Black | |
| Body Material | Recycled plastic | - | |
| Earpad Material | - | Foam | |
| Recommended Use | Portable electronics | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | 10 m | - |
| SOUND QUALITY | Sony WH-CH720N | Poly Blackwire 3320-M |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Adjustable Headband | Yes | Yes | |
| Connectivity Technology | Wireless, wired | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 5.2 | - | |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | SBC, AAC | - | |
| Active Noise Cancelling | Yes | Yes | Both headphones are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | Ambient Sound Mode / Dual Noise Sensor | SoundGuard | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | Digital Sound Enhancement Engine (DSEE), 360 Reality Audio | - | |
| Frequency Response | 7 - 20000 Hz | 20 - 20000 Hz | Sony WH-CH720N offer a larger frequency range than Poly Blackwire 3320-M. |
| Sensitivity | 108 dB | 116 dB | Poly Blackwire 3320-M have higher sensitivity than Sony WH-CH720N. |
| Impedance | - | 32 Ohm | |
| Max Sound Pressure | - | 118 dB | |
| Diaphragm | 30 mm | 32 mm | Poly Blackwire 3320-M have a thicker diaphragm than Sony WH-CH720N. |
| Simultaneously Connectable Devices Qty (Multipoint) | 2 | - | Sony WH-CH720N have the ability to connect to multiple devices simultaneously. |
| Features | MultiPoint Technology, Precise Voice Pickup Technology, Google Fast Pair, Microsoft Swift Pair, Processor V1, Automatic Wind Noise Reduction, adaptive mode | Dynamic EQ optimised | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Sony WH-CH720N | Poly Blackwire 3320-M |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | Beamforming | - | |
| Frequency Response | - | 100 - 10000 Hz | |
| Sensitivity | - | -38 dB |
| REMOTE CONTROL | Sony WH-CH720N | Poly Blackwire 3320-M |
|---|
| Controls | Volume, play/pause, skip track, voice assistant | Mute, volume, answer/end |
|---|
| CABLE | Sony WH-CH720N | Poly Blackwire 3320-M |
|---|
| Cable Type | Headphones cable - detachable - 1.2 m USB-C cable - detachable |
- | |
|---|---|---|---|
| Cable Length | 1.2 m | - | |
| Detachable Cable | Yes | - | |
| Plated Connector | Gold | - |
| FEATURES | Sony WH-CH720N | Poly Blackwire 3320-M |
|---|
| Internet of Things (IoT) Compatible | Yes | - | |
|---|---|---|---|
| Voice Control | Direct | - | |
| Intelligent Assistant | Google Assistant, Alexa | - |
| BATTERY AND CHARGING | Sony WH-CH720N | Poly Blackwire 3320-M |
|---|
| Battery Type | Headphone battery rechargeable | - | |
|---|---|---|---|
| Battery Life | 50 hour(s) | - | |
| Battery Life Details | Continuous talk (noise cancelling ON / Bluetooth): up to 35 hours Continuous playback (noise cancelling ON / Bluetooth): up to 35 hours Continuous talk: up to 40 hours Continuous playback: up to 50 hours |
- | |
| Charging Time | 3.5 hour(s) | - |
| CONNECTIONS | Sony WH-CH720N | Poly Blackwire 3320-M |
|---|
| Connector Type | USB (power only) (USB Type-C) Headphones (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) |
USB (24 pin USB-C) |
|---|
| OTHERS | Sony WH-CH720N | Poly Blackwire 3320-M |
|---|
| Included Accessories | USB-C cable, 3.5 mm audio cable | - | |
|---|---|---|---|
| Compatibility | - | Mac, Windows | |
| Software Certification | - | Certified for Microsoft Teams | |
| Supported Host Device OS | - | Windows 10, macOS |
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