Although small and easily portable, this timer features a large display with 3⁄4; high digits. Also unique is an auto-power-off feature to extend battery life operates only when the timer is idle for 10 minutes and will not interrupt a timing sequence. Counts down from 100 minutes with 1-second resolution. Short warning alarms sound at 3 and 5 minutes prior to the final 30-second alarm. Automatically records elapsed time following the alarm for up for to 20 minutes, or until stopped. A memory recalls the last timer setting for repetitive tests. Has a built in stand, pocket clip and magnetic back. One AAA battery included. Dimensions: 2 1⁄2; x 2 1⁄2; x 1⁄2; 65 x 65 x 15 mmWeight: 2.4 oz 70 g *Certification Option N.I.S.T. traceable Certificate of Compliance available at additional cost Select option above. Downloads Instruction Manual Product Brochure Comparison Chart Comparison Chart