By adding this control to your slider you have access to its options as described below.

Hide circle timer when mouse leaves sliderIt hides circle while mouse is not on slider.
When switched off , It hides circle over Youtube/Vimeo video.
Hide circle timer under this window width It hides the circle timer under this window width
Circle strokeSpecifies the stroke of circle in pixels.
Circle radius Specifies the radius of circle in pixels.
Circle colorSpecifies the fill color of circle