Beats Flex review: $50 Apple headphones ... 'nuf said | iMore
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Beats Flex Wireless Earbuds – Apple W1 Headphone Chip, Magnetic Earphones, Class 1 Bluetooth, 12 Hours of Listening Time, Built-in Microphone - Flame Blue : Electronics - Amazon.com
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Beats Flex Review - MacRumors
Beats Flex review: wireless earbud basics done right - The Verge