Timer counts down with an alarm and counts up with a time-out feature. You can program it to count down from 99 minutes, 99 seconds to zero in any second increment, In the stopwatch mode the unit will count up to 59 minutes, 59 seconds and automatically rollover to zero and continue timing. Extra large 3/4"-high display. Loud, high-decibel alarm . Individually numbered keys make setting time faster. Timer is accurate to 0.01%. It also has a flip-open easel for standing on the lab bench, a spring fastener for clipping to a lab coat, a magnetic back, and a hole for a lanyard. Size is 2 1/2" x 2 1/4" x 1/2" supplied with a 2 year continuous use silver-oxide battery, and certificate.
*With serialized Traceable certificate from an ISO 17025 A2LA accredited Cal lab