Select our easy-to-use timer for all of your repetitive testing needs. It counts down from 99 minutes 59 seconds in second increments and has an automatic memory that resets the display to the last programmed time. Alarm sounds for 30 seconds. Timer includes a Traceable^® certificate (issued by an A2LA-accredited, ISO 17025-certified lab), which documents traceability to NIST standards. AAA battery, magnet, stand, and clip are also included. Dimensions: 2-1/2" x 2-1/2" x 1/2". Weight: 2 oz.