Smarteck QY7 Bluetooth Headphones Earphones Headsets, Wireless Stereo Bluetooth V4.1 Sweatproof Sport Running & Gym Exercise Noise-reduction Earbuds with Mic for Apple Samsung and any Other Smart Android Cellphones or Bluetooth-enabled Tablets Cavity structure design of unparalleled: Equipped with CVC Noise Cancellation 6.0 technology, offering balanced audio , crystal clear sound quality.and APTX lossless sound. EASY TO USE: Compatible with most bluetooth devices, you can adjust volume, play/pause music and answer phones completely effortless Comfort Design: human body engineered design ensure that headphones always stay in your in ears. 3 different medical silicon rubber made ear-tips ensure perfect fit. Sweat-proof, durable design, Onscreen Battery Meter, Up to 5 hours of Talk/Playing Time and 145 hours Standby Time. PureSound In-ear white noise and listener fatigue reduction. Eliminates the white noise and delivers a clean audio experience offering hours of pure enjoyment.