Rotary shavers are electric shaving devices designed for facial hair removal. They feature circular blades that rotate to cut hair efficiently, adapting to the contours of the face. This design allows for a close shave while minimizing skin irritation, making them popular among users with sensitive skin. Typically, rotary shavers come with multiple heads that can pivot and flex, ensuring they reach difficult areas. Many models also offer features like waterproofing for easy cleaning and rechargeable batteries for convenience. Brands like Philips and Braun are well-known for their rotary shaver offerings, catering to various grooming needs.