Clip-It™ is the perfect reminder! Notifies you when to read a color change, remove a sample from an oven, or go to a meeting. Big-digit, 1/3"-high display is easy to read. Five-key operation is quick and intuitive (no need to ever read the instructions). The handiest timer ever designed to clip to your lab coat, belt, notebook, clipboard, or anywhere. You’ll never lose your own personal timer. Program it in the countdown mode, in 1 second increments, from 100 hours to 1 second. In the stopwatch mode, it times from 1 second to 99 hours and then repeats. Accuracy is 0.005%. Also has a time-out feature in both up and down counting. Supplied with clip, magnet, opening for lanyard, battery, and Traceable^® certificate. Traceable to NIST. To assure accuracy, an individually serial-numbered Traceable^® certificate is provided from our ISO/IEC 17025:2005 (1750.01) calibration laboratory accredited by A2LA. It indicates traceability to standards provided by the National Institute of Standards and Technology.