The use of 8 mm unit neodymium magnets ensures high-quality voice output. A gold-plated connectors and headphones copper lines offer an excellent signal transmission. The design has gradually become the best digital allocation for music player. With wider frequency response scope, quality can be balanced to play high, medium and bass effects. The design of the in-ear reduction earphone can still provide you perfectly clear sound quality even when you are in quite noisy environment. The in-earplug is designed to provide complete coverage of the voice.