User interface for smartwatches and wearable devices

An electronic device, comprising:

• a touch-sensitive display;
• a memory;
• and
• a processor in communication with the touch-sensitive display and the memory, wherein the processor is configured to:
• display an indicated value and an annulus on the touch-sensitive display, the annulus having a base segment and a highlighted segment, the highlighted segment beginning at an origin of the annulus and extending to a first position along of the annulus, wherein points along a circumference of the annulus are associated with values between a base amount and a maximum amount and wherein the highlighted segment is based on the indicated value;
• receive a first value-adjusting input at the touch-sensitive display, the first value-adjusting input comprising a drag operation;
• adjust the indicated value in accordance with the first value-adjusting input;
• adjust a size of the highlighted segment based on the first value-adjusting input, wherein the proportion of the annulus represented by the highlighted segment corresponds to a proportion of a range of the annulus represented by the indicated value, the range being a difference between the base amount and the maximum amount;
• receive a second value-adjusting input at the touch-sensitive display, the second value-adjusting input comprising a tap operation;
• and
• in response to receiving the second value-adjusting input, adjust at least one of the base amount or the maximum amount for causing the range of the annulus to be decreased.