... 2.BUILT-IN DDNS domain name 3.Digital zoom 4.Mobile viewer 5.2 years warranty 4 channel dvrSupport local storage at H.264 ... compressionUp to 4 channels CIF Real-time recording and 4 channels playback at ... mobile controlChinese, English, Thai, Russian, French, Spanish, etc. Specifications:VideoInputBNC×4,(1.0Vp-p,75Ω)CVBS OutputBNC×1,(1.0Vp-p ...