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Sennheiser on Twitter: "Bring your #PXC550ii to the next level with the latest firmware update (1.6.2). Aside from battery improvement and pairing enhancements, it makes your listening experience even smoother. 📸 @stevekouta
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Sennheiser Momentum 2.0 and Wireless! | Page 237 | Headphone Reviews and Discussion - Head-Fi.org