Feature: 1.7-inch high-definition display cool blue glass. 2.Anti-skid pad instrument desk portable installation. 3.Before and after the double record, before the 1080P automatic reversing images. 4.With 3G communications, real-time check phone Bluetooth hands-free, online upgrade. 5.Set navigation, electronic dog, recorder as a whole, pre-installed offline map. 6.Mobile phone APP interconnection, voice wakeup, operation. 7.For DVR,you need to buy memory card separately. 8.For FM,you need speaker.