**enforceRange** - _Boolean (defaults to false)_: Set to true to round the `rzSliderModel` and `rzSliderHigh` to the slider range even when modified from outside the slider. When set to false, if the model values are modified from outside the slider, they are not rounded but they are still rendered properly on the slider.
**onlyBindHandles** - _Boolean (defaults to false)_: Set to true to only bind events on slider handles.
**onStart** - _Function(sliderId)_: Function to be called when a slider update is started. If an id was set in the options, then it's passed to this callback.
**onChange** - _Function(sliderId)_: Function to be called when rz-slider-model or rz-slider-high change. If an id was set in the options, then it's passed to this callback.