In depth comparison and review of Poly - Plantronics Backbeat FIT 505 and EPOS I SENNHEISER ADAPT 135T USB-C II. 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 FIT 505 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - wired - 3.5 mm jack, USB-C | |
|---|---|---|---|
| Series | - | ADAPT 100 Series | |
| Height | 6.726 cm | - | |
| Width | 14.877 cm | - | |
| Depth | 17.155 cm | - | |
| Weight | 155 g | 145.3 g | EPOS I SENNHEISER ADAPT 135T USB-C II are lighter than Poly - Plantronics Backbeat FIT 505 headphones. |
| Colour | Black | Black | |
| Earpad Material | Memory foam | Leatherette | |
| Headband Material | Memory foam | - | |
| Protection | Moisture-resistant, sweat-resistant | - | |
| Recommended Use | Portable electronics | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | 10 m | - |
| SOUND QUALITY | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.1 | - | |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | EPOS Voice | |
| Frequency Response | 50 - 20000 Hz | 20 - 20000 Hz | EPOS I SENNHEISER ADAPT 135T USB-C II offer a larger frequency range than Poly - Plantronics Backbeat FIT 505. |
| Total Harmonic Distortion (THD) | <3% | - | |
| Impedance | 32 Ohm | - | |
| Max Sound Pressure | - | 115 dB | |
| Diaphragm | 40 mm | - | |
| Magnet Material | - | Neodymium | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | - | Mono | |
| Noise Cancelling | - | Yes | EPOS I SENNHEISER ADAPT 135T USB-C II microphone can cancel out ambient noise. |
| Frequency Response | - | 100 - 8000 Hz |
| REMOTE CONTROL | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Controls | Answer/end, play/pause, next/previous track | Volume, answer/end |
|---|
| CABLE | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Cable Type | Micro-USB charge cable Audio cable |
Headset cable |
|---|
| FEATURES | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 135T USB-C II |
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| Features | - | EPOS ActiveGard |
|---|
| BATTERY AND CHARGING | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Battery Type | Headphone battery rechargeable | - | |
|---|---|---|---|
| Battery Life | 18 hour(s) | - | |
| Standby Time | 480 hours | - | |
| Charging Time | 1.5 hour(s) | - |
| WIRELESS LINK | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Transmission Range | 10 m | - |
|---|
| CONNECTIONS | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Connector Type | - | Headset (USB Type-C) Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Software Certification | - | Certified for Microsoft Teams, Optimised for UC | |
|---|---|---|---|
| Service & Support | - | Limited warranty - 2 years |
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