Description The Electronic Timer is pocket sized: 2-5/16" wide x 2-7/16" high x 1/2" thick.It attaches to anything and includes a spring-loaded clip that converts into a stand, a magnet for metal surfaces, and a hanging hole.Times from 100 minutes down to 1 second with electronic accuracy, and emits a loud electronic tone when timing period is completed.It includes one 1.5 volt button cell battery and a full one year warranty.