Features: brand new and high quality Adopts complex craftsmanship alloy faceplate with the transparent resin earphone for shell for an exquisite look. With ergonomic design concept perfectly fits ear canals, providing ultimate secure fit and comfort. You are able to better enjoy the music. Innovation of Dynamic:2 magnetic dynamics, Diaphragm thinner, sound density better, and music distortion rate lower. It's easy to enjoy the HiFi audio . The advantage of the dual magnetic circuit dynamic is in the strong and abundant magnetic,which provides shocking low-frequency sound effects,and the gentle and sweet vocals,as if being in a concert scene. Silicone crystal composite biocellulose diaphragm is 2 times more efficient compared to comventional biocellulose diaphragm,thus can be driven easily.This extends the frequency range,allowing excellent transient resvponse even when driven by smartphones. Specifications: Headphone Type: In-ear Headphones Plug: 3.5mm Plug Type: Straight Plug Type Whether Wireless Headset: Wired Headset Is There a Microphone: Yes Sounding Principle: Moving Coil Frequency Response: 20-20000hz Impedance: 22Ω Sensitivity: 106db Distortion Rate: 1% Wire Length: 1.2m Horn Diameter: 10 (Φmm) Earplug/earmuff Material: Silicone Headphone Cable Material: TPE Option Color:Brilliant;Transparent Black;Transparent White Package Includes: 1x Earphone 6 Pair Silicone Covers note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.