- Purpose
- Count time forward or backward with one primary action.
- Anatomy
- Header + modes → large value → contextual presets → start/pause/reset.
- Interaction
- One clock, two modes. Presets appear only when they add time.
- Components
- UtilityShell, UtilitySegmentedControl, UtilityValue, UtilityControlGroup, UtilityPrimaryAction