| DESIGN AND DIMENSIONS | Sennheiser HDC 451 | - |
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| Product Type | Headphones - wired - 3.5 mm jack | - |
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| Weight | 110 g | - |
| Colour | Black | - |
| Body Material | Plastic | - |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Sennheiser HDC 451 | - |
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| Headphones Form Factor | On-ear | - |
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| Headphones Technology | Dynamic | - |
| Connectivity Technology | Wired | - |
| Active Noise Cancelling | Yes | - |
| Active Noise Cancelling Technology | NoiseGard active noise compensation | - |
| Sound Output Mode | Stereo | - |
| Frequency Response | 20 - 18000 Hz | - |
| Sensitivity | 94 dB | - |
| Impedance | 270 Ohm | - |
| REMOTE CONTROL | Sennheiser HDC 451 | - |
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| Controls | On/off | - |
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| CABLE | Sennheiser HDC 451 | - |
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| Cable Type | Headphones cable - 2 m 2 x audio adaptor |
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| BATTERY AND CHARGING | Sennheiser HDC 451 | - |
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| Battery Type | 2 x battery - AA type | - |
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| Battery Life | 80 hour(s) | - |
| CONNECTIONS | Sennheiser HDC 451 | - |
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| Connector Type | Headphones (mini-phone stereo 3.5 mm) | - |
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| OTHERS | Sennheiser HDC 451 | - |
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| Included Accessories | Battery case | - |
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| Service & Support | Limited warranty - parts and labour - 2 years | - |
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