[DETAIL] Please note we have two versions: Old version without WIFI and rear camera New version has WIFI function and rear camera is optional. Product Specifications: > 3 Channels [Front1080p+Interior720p+Rear720p] > 2 Channels: [Front1080p+Interior720p] > Screen size: 2 inches > File format: AVI >Voltage 1 Current: 5V/1A > Video resolution: 1080P; 720P; 720P > Continuour Loop Video: Seamless Loop Recording > Automatic power on/off: support automatic ignition and shutdown > Interface: Support USB > Time Synchronization: Support > Support memory card: TF (maximum support 64 GB) > Built-in stereo: support > Frequency: 50HZ / 60HZ > Supported languages: Chinese, English, French, Russian��Japanese, Spanish��Korean��etc. New HD 3 Lens WIFI Dash Camera Only Front Camera: 1080P Front + Rear Camera:1080P+1080P;Front & Inside Camera:1080P+720P; Front & Inside & Rear Camera:1080P+720P+720P Starlight Night Vision With the help of F2