simple and easy to use : one switch and two button . good value for the money . one-way set -lrb- advance only -rrb- for hour and minute -lrb- one button for each -rrb- , so if you overshoot you mark , you have to go around again , but it be fast . the stand be a bit fragile , but serviceable . one unexpected feature - you can use the night light to drive with if you headlight go out .