Side by side comparison and review of Koss UR 23i and Poly - Plantronics Backbeat 505. 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 | Koss UR 23i | Poly - Plantronics Backbeat 505 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless - 3.5 mm jack | |
|---|---|---|---|
| Series | - | 500 Series | |
| Weight | - | 155 g | |
| Colour | White | Black | Dark grey | |
| Earpad Material | - | Memory foam | |
| Recommended Use | Portable electronics | - | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Koss UR 23i | Poly - Plantronics Backbeat 505 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.1 | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | - | |
| Sensitivity | 94 dB | - | |
| Impedance | 34 Ohm | - | |
| Diaphragm | - | 40 mm |
| MICROPHONE | Koss UR 23i | Poly - Plantronics Backbeat 505 |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - |
| REMOTE CONTROL | Koss UR 23i | Poly - Plantronics Backbeat 505 |
|---|
| Controls | - | Volume, answer/end, play/pause, next/previous track |
|---|
| CABLE | Koss UR 23i | Poly - Plantronics Backbeat 505 |
|---|
| Cable Type | Headphones cable - 1.22 m | - |
|---|
| BATTERY AND CHARGING | Koss UR 23i | Poly - Plantronics Backbeat 505 |
|---|
| Battery Type | - | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 18 hour(s) |
| WIRELESS LINK | Koss UR 23i | Poly - Plantronics Backbeat 505 |
|---|
| Transmission Range | - | 10 m |
|---|
| CONNECTIONS | Koss UR 23i | Poly - Plantronics Backbeat 505 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | Headphones (mini-phone stereo 3.5 mm 4-pole) |
|---|
| OTHERS | Koss UR 23i | Poly - Plantronics Backbeat 505 |
|---|
| Service & Support | Limited warranty - lifetime | - |
|---|
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