Headphones Koss UR21
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| Weight: | 175 g |
| Design: | Full size |
| Description: | Design: full-size, device type: wired headphones, design features: L-shaped plug, plug connector: mini jack 3.5 mm, acoustic design type: closed |
| Additional Information: | Cable connection: bilateral; Gold-plated connectors: yes |
| Plug connector: | mini jack 3.5 mm |
| Harmonic coefficient: | 0.4 % |
| Impedance: | 32 ohm |
| Sensitivity: | 90 dB |
| Included: | Adapter 6.3 mm |
| Length of cable: | 1.2 m |
| Design features: | L-shaped plug |
| Device type: | Wired headphones |
| Mount type: | Headband |
| Maximum playback frequency: | 20000 Hz |
| Minimum repeatable frequency: | 40 Hz |
| Technology: | Dynamic |
| Type of acoustic design: | Closed |