This Last 72 Hours icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,400 icons, all in the same style and quality.
The image is of a clock face. The image is a circle with dots along the inside of the circle's edge. The numbers seven and two are in the center of the circle. The outer edge of the circle forms an arrow that is pointing counter clockwise.