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There are four memory programs. Easy to change modes and volume with one finger tap.
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Noise reduction chip enables efficient volume fit.
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Three open fit ear bomes. It is small and comfortable; can choose the ear tip size as you like.
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Have two packs of A13 batteries. It is easy to change it once in 12 days rather than to recharge every day.
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30-Day unconditional refund & 2-year warranty
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IPX7 Waterproof- Suitable for sports to prevent water or sweating while exercise