Eoncore Anti-radiation 3.5mm Air Tube Stereo Earphone Wired Single Earbud In-Ear Vacuum Spiral Conduit Monaural Earpiece With Mic Voice through the plastic vacuum tube was introduced into the ear,perfectly prevent wave radiation from your brain Comes with one external speaker,make you enjoy non-traditional hearing experience Ear silicone mushroom head design,maximum to eliminate ambient noise,size can be changed,safety and health Universal 3.5mm plug, high-quality nickel-plated pins, strong antioxidant capacity.Durable and strong. Special collar clip, convenient to fix headphone and microphone, ensure the quality of answer the call New "Intelligent switching mode" Module that allows you to bid farewell to switch wiring trouble. The material of shell is magnesium alloy.high-quality touch feeling