The eCount is a simple to use colony counter for counting cells inmicrobiology applications or tissue culture. This unit combines a multifunctionelectronic counter with a Sharpie® pen for counting and markingto prevent missing or double-counting colonies in a Petri dish.US Patent No. D564385 and EP Registered Design No. 705751-0001.Features a light, ergonomic body that is balanced for easy manipulation.The unit has convenient easy to use touch controls for multiple counts, sums, counting up or down and turning the unit on/off.Count up/down verification, enables you to confirm you counts.Thumb button allows you to use the eCount as a digital tally counter.Easily verify each count with either an audible beep or LED flash.Displays totals for up to 32 individual counts or zones.Quick and easy to change between different colored markers to check different colony counts in the same view.Multi-functional counter can be turned off allowing the unit be used for writing Up to 999 colonies per zone helps simplify the counting process.Weighted stand for bench top use.Long Life – CR1225 3.0 V Lithium battery.Warranty: 5 Year *not including battery.