Hair trimmers are handheld devices designed to cut and shape hair with precision. They typically feature sharp blades that can be adjusted for different lengths, making them suitable for various grooming tasks, such as trimming beards, mustaches, and hair on the head. Many trimmers are cordless, allowing for easy maneuverability, and some come with attachments for added versatility. These tools are popular among both professionals and individuals for their convenience and efficiency. Brands like Philips, Wahl, and Braun offer a range of models, catering to different needs and budgets. Regular use of hair trimmers can help maintain a neat appearance and promote personal grooming.