![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://eu.sennheiser-hearing.com/cdn/shop/products/660S2.1_60fa5b21-cc0d-4597-9ed4-27ffbcd74ac2_530x@2x.png?v=1674735758)
HD 660 S 2 Refurbished | In-Ear, Noise-Canceling, Wireless, Bluetooth, Music; Entertainment, Travel, Sports - Sennheiser Discover True Sound
![HD 660 S 2 | In-Ear, Noise-Canceling, Wireless, Bluetooth, Music; Entertainment, Travel, Sports - Sennheiser Discover True Sound HD 660 S 2 | In-Ear, Noise-Canceling, Wireless, Bluetooth, Music; Entertainment, Travel, Sports - Sennheiser Discover True Sound](https://au.sennheiser-hearing.com/cdn/shop/files/HD_660S2_ATF_Image_4_EN_1024x1024@2x.jpg?v=1690961586)
HD 660 S 2 | In-Ear, Noise-Canceling, Wireless, Bluetooth, Music; Entertainment, Travel, Sports - Sennheiser Discover True Sound
![The pair of HD660s I've been wearing every day for almost the past 5 years. Are they still a worthy contender in 2022? : r/headphones The pair of HD660s I've been wearing every day for almost the past 5 years. Are they still a worthy contender in 2022? : r/headphones](https://i.redd.it/4d7mnntcu2b91.jpg)