1.1/4" CCD Sensor 2.H.264 video compression 3.100m IR distance 4.PayPal acceptable 5.short delivery, competitive ... / Saturation / Chroma adjustableAudioCompression standardG.711Two way audioOptionalInterface1* audio input and 1*audio outputNetworkProtocolTCP/IP,HTTP,ARP,RARP,ICMP,DHCP,DNS,DDNS ...