The Swann SWDVK-825508C Camera Security Monitoring System (8-Channel) consists of an 8-channel DVR8-2550 digital video recorder and 8 ADS-180 day/night cameras. Featuring a 500 GB hard drive (supports up to 2 TB), the DVR8-2550 supports up to D1 resolution, and frame rates of up to 120 fps (combined). It features manual, motion, and schedule recording modes, and supports multiplex operation. Recorded videos are stored in H.264 format that helps reduce video file sizes without compromising on the quality and integrity of images. Videos are watermarked with date and time for authentication purposes.