Select either a bright flashing yellow LED visual alarm or an audible alarm. A memory recalls the last timer setting for reuse. Model 810045 is often used by testing organizations, including Law School Admissions Council LSAC. Built-in stand for benchtop use, clips to a pocket, or sticks to any metal surface with a magnetic back. 2 AAA batteries included. 5 year warranty. Dimension: 3; x 2; x ; 75 x 55 x 15 mm Weight: 2 oz 57 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