Dual Channel Timer, Features Green Light Flashes While Counting Down and Read Light Flashes Once Zero has Been Reached, Unique Visual Indication for Each Channel, Overall Depth 5/8 in, Overall Diameter Not Applicable, Overall Height 3 in, Overall Width 3 1/2 in, Digital Display Screen Type LED, Alarm Type Audible, Visual, Display Type Digital, Maximum Time Setting 99 hrs, 59 minutes, 59 seconds, Minimum Time Setting 1 sec, Count Direction Count Down, Count Up, Number of Channels 2