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Macworld
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Jaybird's X4 sport earbuds are redesigned and waterproof | Engadget
Jaybird X4 Review - Is this Wireless Headphones worth a look?
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Jaybird X4 earphones with mic - Metal | Lenovo US
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Jaybird X4 Review - The Streaming Blog
Wireless Earbud Charger | USB X4 Charging Cradle | Jaybird Shop
Jaybird X4 Wireless Sport Headphones review - The Gadgeteer
Jaybird X4 review: Wireless sports earbuds that do it all | Android Central
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Jaybird X4 review | TechRadar
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Jaybird X4 review - SoundGuys
Jaybird X4 Review: Why They Aren't The Best Sports Earbuds
Jaybird X4 Review | Trusted Reviews
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