... are available 4.CIF,HD1,D1 resolution 1~4 channel wireless 3G bus DVRIntroduction1,Support 4CH video,CIF,HD1, ... see time, date, vehicle speed and license plate number in the video.CE CertificateFCC CertificateRoHS Certificate2010 SAFE CITY CONSTRUCTION RECOMMENDED ... of Utility Model Patent 2010 Senior Director Member in Shenzhen Security&protection Industry Association 1~4 channel wireless 3G bus DVR