Idea of Minus 1 Hour Icon
The icon is Minus 1 hour. A -1h is enclosed in a circle. The circle has a small rectangle attached to its right side. This circle is atop two parallel lines. The design looks much like a wristwatch.
This Minus 1 Hour 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 6,100 icons, all in the same style and quality.