This is the only multichannel timer on which different channels can be set independently but start simultaneously. Has one of the loudest alarms available—useful around high background noise. Four channels count 100 hours either up or down with 1-second resolution, a fifth channel works as a calendar and alarm clock and a sixth channel is a 10-hour stopwatch with 1/100th second resolution. The timer has a built-in stand for benchtop use, clips to a pocket or sticks to any metal surface with a magnetic back. Uses one AAA battery (included), measures 2 1/2" x 2 7/8" x 1/2" and weighs 2 oz.