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H2O Audio Sonar IPX8 - Bluetooth Bone Conduction Headphones with MP3 Player - Wireless, Open Ear Waterproof Headset for Swimming, Underwater Activities, Sports, Workouts : Amazon.sg: Electronics
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Amazon.com: H2O Audio TRI Multi-Sport Waterproof Bone Conduction Headphones, Bluetooth Open Ear Headphones with Built-In MP3 Player -up to 6-Hour Battery Life, 8 GB -For Swimming, Running, Cycling, Hiking (Black) : Electronics
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