Use our lightweight, portable timer to program 3 different activities from 1 second to 9 hours 59 minutes 59 seconds. Each channel has a distinct electronic alarm and display indicator. The alarm turns off manually or is silenced automatically after 1 minute. Large 1"-high LCD digits are easy to read. Accuracy is 0.001%. Timer includes a Traceable® certificate (issued by an A2LA-accredited, ISO 17025-certified lab), which documents traceability to NIST standards. Includes 2 AA alkaline batteries. Dimensions: 3" x 3" x 1-1/8". Weight: 4 oz.