Genie QCY Mini Lightweight Sports Wireless Bluetooth 4.1 Earphone for iPhone, iPad, Android, Samsung Phone and Tablets Bluetooth 4.1 compatible, good signal to noise ratio, highly portable and great for sports activities Very Easy to pair and pair once Adopt the most advanced bluetooth CVC6.0 noise cancellation, it can accurately distinguish the difference between voice communication and noise,and judge it intelligently through the transmission between different decible and reduce noise decibels.Which makes you enjoy a clear sound even through you are in a noisy environment. HD stereo with the 96KHZ DAC is more delicate than standard-definition sound, no matter ther high pitch ,bass or treble accent,it can presented perfectly