Zosi H. 264 8 Channel 1080N/720P digital video recorder, includes 4 x 1280TVL Bullet outdoor security cameras. No include hard drive. This 8Channel 4-in-1 DVR which supports Analog, HD-TVI, CVI, AHD camera. It provides you the flexibility to extend additional cameras. You can add more 4Pcs 720P or 1080P cameras. Build-in 24Pcs IR LED with IR cut filter ensures true color under all lighting conditions day or night, night vision up to 20meter (65 feet). email notification and mobile push alerts when motion detection, free apps for live view and playback on smartphone. Support USB port back up, gives you the easiest option of backing up and transferring your video footage to a USB flash drive. Two Year quality warranty, life time Tech support ! if your product stops working in the first Year we will replace it.