Featuresr lightweight compact and exquisite design easy to carry withr bluetooth 41 connects to devices in just 3 secondsr multi point feature lets you connect to two devices and switch between themr flexible soft material of ear hook convenient to wear and feel comfortabler built in mems microphone for clear audior on ear controls to adjust volume in line button to accept callsr dynamic speaker unit with metal composite diaphragmr waterproof and sweatproof ipx4r built in 110ma r