1.900/ 1800/ 1900MHz 2.Real Universal Charger 3.High Quality of Connection 4.1 Year Warranty hidden microphone gsm bug Universal Charger hidden microphone gsm bug Featuresworldwide plug adapter with GSM BUG (EU, UK and USA Plug)highly conceal, cannot findnever power offhighly quality world travel adapter with USBUSB can charge all digital productVoice trigger call backCan set call back ...