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The Sennheiser HD 660S2 are wired, open-back over-ear headphones designed for audiophiles and professionals seeking refined acoustic performance. Featuring 42mm transducers with ultra-light aluminum voice coils, they deliver detailed highs and deep bass down to 27.5 Hz. Crafted with premium materials and equipped with detachable cables, these headphones offer durable elegance and versatile connectivity for music, gaming, and podcasting with all-day comfort.





| Connectivity technology | Wired |
| Wireless communication technology | Kopfhörer mit Kabel |
| Included components | 4.4 mm cable (1.8 m), 6.3 mm cable (1.8 m), 6.3mm to 3.5mm adapter, HD 660S2 headphones, Protective Case |
| Age range (description) | Adult |
| Material | Aluminium |
| Specific uses for product | Music |
| Recommended uses for product | music |
| Compatible devices | Devices with 6.35 mm audio input or adapter compatibility |
| Control type | Media Control |
| Cable feature | Detachable |
| Item weight | 260 Grams |
| Water resistance level | Not Water Resistant |
| Package type | Protective delivery packaging with a portable carry pouch |
| Unit count | 1.0 Count |
| Style | HD 660S2 |
| Control method | Touch |
| Number of items | 1 |
| Product Dimensions | 24.2 x 18.2 x 10 cm; 260 g |
| Item model number | 700240 |
| Connector | 3.5mm Jack |
| Hardware Interface | 3.5mm Audio |
| Speaker Amplification Type | Passive |
| Material Type | Aluminium |
| Size | one size |
| Power Source | Corded Electric |
| Item Weight | 260 g |
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