Anti-Radiation Noise Cancelling 2-Pin In-Ear Air Duct Earpiece Earphone with Microphone for Walkie Talkies 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!