Conair GMT189CGB is a rechargeable trimmer designed for trimming beards and mustaches. It features a three-position taper control for adjusting the closeness of the cut, a five-position comb for different hair lengths, and three jawline attachments for a neat, finished trim. The trimmer is designed for dry use only and should not be exposed to water or liquid. It comes with a charging stand and an oil packet for lubricating the blades. To preserve the batteries, the trimmer should be recharged for 16 hours approximately every 3 months.