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Pairing the headphones with a Bluetooth device
Sennheiser HD 450BT review - SoundGuys
Sennheiser HD 450BT Review — GYMCADDY
Hands-on review: Sennheiser HD 450 BT headphones
Sennheiser HD 450BT Review: These Headphones Sound More Expensive Than They Actually Are
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Sennheiser Steps Up with New HD 450BT and HD 350BT Wireless Headphones | audioXpress
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Sennheiser HD 450BT Headphones Review: Affordable Cans | Digital Trends
Sennheiser HD 450BT review - SoundGuys
Sennheiser HD 450BT Review: These Headphones Sound More Expensive Than They Actually Are
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Sennheiser HD 450BT Review | Trusted Reviews
