This mini DV supports circulating recording, you don' t need to delete previous videos. When a moving target appears in the monitoring area, the surveillance video recorder will automatically record. Features: Compact design, support motion detection. Built-in lithium battery supports sustainable camera whose duration is up to 100 minutes. Suitable for all occasions such as having lessons, meeting, taking part in concert, and interviewing and so on. IR night vision, also suitable for night. Lightweight and easy to carry, this mini DV supports TF card (not included). 1080P high definition pixel and 140° wide angle lens. Specifications: Material: metal Colour: black, red, blue (optional) Video format: AVI Video coding: M-JPEG Video resolution ratio: 1920X1080P, 1280X720P Video frame rate: 30 fps Player software: operating system or bring the mainstream video player software Picture format: JPG Image resolution: 12M (4032x3024) Image proportion: 4 : 3 Support system: for Windows me/2000/xp/2003/vista, for Macos, for Linux Battery capacity: 200mAh Battery type: high capacity polymer lithium electricity Working time: about 100 minutes Interface type: mini 8Pin USB Memory: TF card, up to 32GB (not included) Item weight: 20g / 0.71oz Item size: 23 * 23 * 23mm / 0.91* 0.91 * 0.91in Package weight: 70g / 2.47oz Package size: 96 * 93 * 36mm / 3.78 * 3.66 * 1.42in Note: Please notice that this product do NOT includes memory card. Package list: 1 * Mini DV 1 * Manual 1 * Clip 1 * USB Cable 1 * Camera Mount