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Sennheiser HD 660S2 Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black: Amazon.co.uk: Electronics & Photo
![HD 660 S 2 Refurbished | In-Ear, Noise-Canceling, Wireless, Bluetooth, Music; Entertainment, Travel, Sports - Sennheiser Discover True Sound HD 660 S 2 Refurbished | In-Ear, Noise-Canceling, Wireless, Bluetooth, Music; Entertainment, Travel, Sports - Sennheiser Discover True Sound](https://uk.sennheiser-hearing.com/cdn/shop/products/660S2.1_60fa5b21-cc0d-4597-9ed4-27ffbcd74ac2_530x@2x.png?v=1692709697)
HD 660 S 2 Refurbished | In-Ear, Noise-Canceling, Wireless, Bluetooth, Music; Entertainment, Travel, Sports - Sennheiser Discover True Sound
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