1) 4 channel video and audio recording. 2) all cameras are powered by the dvr: stable +12v dc power supply. 3) high resolution recording, up to mega-pixel for 4 channel (1280x1024). 4) d1 resolution for each channel (pal: 704x576 / ntsc: 720x480). 5) advanced h.264 high profile technology for video compression 6) data storage: max support 2tb sata hdd and 64gb sd card. Usb external storage device is available 7) built-in gps module; 8) built-in wan port, wan is available; support external wifi 9) motion detection / timer switch / sensor & alarm recording 10) dual anti-vibration function. 11) compact size, much easier for installation. 12) power: dc+8v +36v; the best voltage is around +12v-+24v. 13) language: chinese simplified/chinese traditional/English/Japanese/Korean/ Russian. 14) certification: ce fcc rohs Product size: 148*122*45mm; g.W weight: 2kg
