Features 13mm dynamic driver for stereo sound and type c interface for quick charging | Comes with a long battery without embarrassment of frequent charging | Life level waterproof well withstanding sweat | 3d stereo sound adopting high definition lossless rendering technology the earbuds have incredible sound quality with deep bass and clear treble bringing you an incomparable 3d surround music experience | Noise reduction the earphones adopt intelligent noise reduction technology and deliver a true unparalleled clear sound quality bringing you amazing wireless music experience and call clarity