DRI Sleeper Alarm System - Unit measures 3 x 1(5/8) x (3/4)", Includes four 1.4V batteries

Small, comfortable unisex design with moisture detector that attaches inside the underwear. Awakens child by detecting even the slightest amount of urine. An optional disposable, paper-based pad can be used to help secure detector. Unit measures 3 x 1(5/8) x (3/4)". Includes four 1.4V batteries.