Nice IEM EarphonesKZ ZST is dual drivers IEM earphones with 1 balanced armature and 1 dynamic driver per side.Independent sound channel ensures the sound not be distorted and allows a better mix of high and low frequencies.The KZ ZST has excellent level of clarity and nice detail. Excellent Sound QualityThe armature and dynamic unit combines complement to give more details of music show.You can hear powerful bass,energetic mids and clear treble.All in fast and dry v-shaped sound signature with overall balanced listening experience. Noise Isolation HeadsetKZ ZST Colorful hybrid drivers in ear earphone Hifi Sport Headset, with more directer transmission to the eardrum ,provides you better quality experience.Upgraded noise canceling technology are more efficient to block external noises than conventional earbuds headphones. Stylish Design & Comfort FitThe looks of ZST earphones are stylish and futuristic, with transparent acrylic housing and hitting colors,fashionable and ligh