... sales Walk-talkie Transceiver for mobile phone,mobile phone transceiver, mobile phone speaker ,cellphoe walkie talkie ,mobile phone walkie talkie Features:Used as ... hold the top button down when you receive a phone call and you can use it to talk just like ... ; Remove the back panel to insert the batteriesWhy choose Mobile Phone Transceiver?Hands Free, Retro style, radiation1) Talkback systems .There ...