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Amazon.com: Sennheiser Consumer Audio HD 450BT Bluetooth 5.0 Wireless Headphone with Active Noise Cancellation - 30-Hour Battery Life, USB-C Fast Charging, Virtual Assistant Button, Foldable - White : Electronics
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Sennheiser HD 450BT Headphones Review: Affordable Cans | Digital Trends
Review: Sennheiser HD 4.50 BTNC | Jeffrey Chandler
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