Touch screen 9 single din quad-core adjustable android 8.1 car gps wifi bt dab system operation system android 8.1 cpu quad core gpu quad core rom 16gb ram 1gb extended usb support usb disk up to 32gb display touch screen yes resolution 1024600 capacitive or resistance screen capacitive built-in clock and calendar yes, show real time and can use network-provided time main menu status bar display can be changed to music/radio/bt-stereo player and clock/date/week change apps-icon position yes wifi/3g/4g connector on the back wifi built-in wifi modem, support 802.11b/g/n supports 4g & 3g internet (4g dongle and 3g dongle are not included) internet explorer opera, ucweb, skyfile, dolphin and more explorer for your selection online entertainment online video, tv, movie, music, radio, video chat online navigation online google maps navigating online games yes, online play or you can download it from google play store online communication wechat, twitter, facebook, skype, gmail, whatsapp etc.