This is an image of the profile of a human head facing towards the right. The head has no features on it. In the mouth of the figure is a whistle like shape with a musical note coming out of it.
This is a Referee icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,700 icons, all in the same style and quality.