It's a logo for HD 720p reduced to the numbers 720p. The numbers are enclosed in a square that borders it. It looks like a 720p logo that you would see on a normal Smart Television set.
This HD 720p icon is made in flat color style
. This format was developed by Icons8 designer team and became immensely popular for use in web and mobile applications. Feel free to download this icon in PNG format for free, or unlock other formats for $5. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 6,200 icons, all in the same style and quality.