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4 independent channels each of which counts up or down for any interval from 1 second to 100 hours, plus clock button. Extra large display indicates channels in use. Each one has a distinctive 1 minute alarm. Automatically begins to count up to indicate time elapsed after count down reaches zero. Memory recalls last timer setting or reuse. Also has a clock mode. Has a stand, pocket clip, and a magnet. Supplied with one button cell battery. Large size display Time and alarm Dimensions: 2 7/8 x 2 1/2 x 9/16 Inches Weight: 2 Ounces Range: 24 Hours Resolution: 1 Second Count Up Channel: 1 Count Down Channel: 2 Clock: Yes Recalls Previous Setting: Yes 4 independent channels Clock mode