YTR.co Splashproof Bluetooth Headphones, Wireless 4.1 Earbuds Stereo Earphones, Secure Fit for Sports with Built-in Mic

Amazon.com Price: $3.99 (as of 02/06/2019 11:24 PST- Details) & FREE Shipping.

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BLUETOOTH V4.1WIRELESS EARBUDS: An inline remote control with mic handles volume, tracks, and calls, and works with iOS and Android.
SIGNATURE SOUND: Premium dynamic earphones create big sound, and pure bass pure bass performance to give you the inspiration and motivation to finish strong. Bluetooth earbuds frequency responce 10Hz – 20kHz, 100dB@1kHz sensitivity.
SWEAT PROOF AND DURABLE: Designed with rugged and premium materials, these wireless earbuds are extensively tested by professional athletes – built to withstand the most intense workouts.

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