Featuresr the product is only for bluetooth 40 devicesr music stopwatch activate your limitless sports potencer hands are not the only what is free b90 minimizes background noises by means of double mic balance of noise reductionr the fm radio of b90 itself makes you enjoy not only walkman news but also nice music easier when doing sportsr hands free call driving at ease safe driving hands free callr it also supports phone selfie alarm clock stopwatch etcr wearable design very