Cwxuan Adjustable Throat-Vibration Anti-Radiation In-Ear Air Duct Earpiece Earphone with Mic has a part of flexible air tube which is more convenient to use during driving and sporting. The product is away from electromagnetic, more environmental and have anti-radiation function. Stay away from the electromagnetic, safe and convenient to use. The earphone is suitable for iOS and Android devices via regulating switch. It is worthy of buying! Do have a try!