Brand Name:xiaomi Sensitivity:28dB Function:For Mobile Phone,Sport,Common Headphone,HiFi Headphone, Support APP:No Connectors:3.5mm Jack Line Length:1.25cm Style:In-Ear Plug Type:Line Type Frequency Response Range:20-20000Hz Is wireless:No XiaoMi Model:Millet piston Wireless Type:None Model Number:Xiaomi Piston 3 earphone basic version Waterproof:No Communication:Wired Control Button:Yes With Microphone:Yes Color:Black Materials:Aluminium Chamber Communication:Wired Vocalism Principle:Piston technology Model number:Xiaomi Piston 3 earphone type:In-Ear earphone Net Weight:14g Version:Mi Piston Basic Version Earphone Wired Control with MIC Features:Original Xiaomi Mi Piston earphone Corrosion resistance and long-lasting wear The anodized aluminum surface is anodized to protect against corrosion and wear, while the main bodys is made of lightweight PC material that's robust and extremely durable.