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Amazon.com: Jaybird X4 Wireless Bluetooth Headphones for Sport Fitness and Running, Compatible with iOS and Android Smartphones: Sweatproof and Waterproof - Black Metallic/Flash (Renewed) : Electronics
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Logitech Jaybird X4 Bluetooth Headset Sports Neck Type Ipx7 Waterproof And Sweatproof 8 Hours Battery Life Magnetic Charging - Earphones & Headphones - AliExpress
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