Unit:10mm titanium coated diaphragm dynamic driver + knowles armature 32873 Faceplate: Precision five-axis CNC machinery allows nanometer accuracy for a refined touch and look. Red and blue,lover’s colour.if OEM/ODM,can with your own logo and colour,and MOQ is only 100pcs. Shell:transparent,3D printed shell with resin,if OEM/ODM,can with the colour you want. Cable:8C * (24 * 0.05mm + 200D) oxygen free copper plated silver wire core,adopts 0.78mm 2 pin dual pin plug-in design, which can be freely replaced, such as Bluetooth module, hifi upgrade line, multi specification balance line, etc. Frequency response range: 20-20000Hz Sensitivity: 112.6dB Impedance: 13.6Ω Plug specification: 3.5mm Microphone: without microphone metal headset