● Advanced Data Collection Extended Function ● 8 Channel Video Monitoring ● 3G / 4G / WIFI / LAN Network ● Operation Data Analysis ● Support Double Stream ● Scheduling Data Overlay, Convenient Management ● Support CVBS、HDMI ● GPS ( optional ) More details pls click here to check: https://www.alibaba.com/product-detail/3g-4g-lte-8-channel-1080p_60553265010.html?spm=a271v.8028081.0.0.TEz99f