Product Size (L x W x H): 9.0 x 5.3 x 4.0 cm / 3.5 x 2.1 x 1.6 inchesPackage Contents: 1 x G30B Car DVR Recorder， 1 x Car Charger， 1 x External Camera， 1 x Cable for External Camera， 1 x USB Cable， 1 x User ManualMain Features:1080P FULL HD high quality resolutionDual cameras: Front camera(1080P， 140 degree wide angle); Back camera: (480P， 120 degree wide angle)Advanced H.264 photography compression technology2.7 inch high resolution LCD， can watch while shootingChipset : Allwinner A10IR night vision function G-sensor functionMotion detection functionSupport TF memory card， up to 32GB Seamless loop-cycle recording functionDelay power off functionAutomatically turn on/off function