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Amazon.com: Sony Extra Bass Bluetooth Headphones, Best Wireless Sports Earbuds with Mic/Microphone, IPX4 Splashproof Stereo Comfort Gym Running Workout up to 8.5 Hour Battery, Black (International Version) : Electronics
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Sony launches MDR-XB50BS and XB80BS wireless extra bass in-ear headphones | Technology News,The Indian Express
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Sony MDR-XB50BS review: An affordable wireless sports headphone that fits well and sounds decent - CNET
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SONY MDR-XB50BS EXTRA BASS Wireless Sports In-ear Bluetooth Stereo Earphones Running Headset With Mic For iPhone Smartphones - AliExpress
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