Neckband headphone/earphone/mobile headset 1.clear and high sound quality 2.hi-fi magnetic speaker 3.fashion soft ear cushi Neckband headphone/earphone/Mobile headset::Thrilling bass system, 30mm professional heavy bass coil-moving loudspeaker, 16μ super-thin diaphragm and the magnet adopts high-magnetization Nion-Demium magnet 400 KJ/m3, 20 to 20,000Hz frequency response range makes the sound ...