This is the cordless, compact device that, when used as indicated, safely sanitizes your toothbrush with UV-C light in only three minutes. The proven germicidal UV technology—the same technology trusted to sanitize medical instruments—eliminates up to 99% of bacteria and viruses that can accumulate on your toothbrush. It activates when the cover is closed, shuts off automatically at the end of the cycle, and accommodates most toothbrush types. UV bulbs are rated for 100 hours. A 3-4 hour charge via included USB cable provides 80 minutes of power (roughly 2 weeks of use). 2 3/4" H x 2 1/2" W x 1 1/4" D. (6 1/2 oz.)