Battery Operated. The Micro Hair Precision Trimmer is great for removing unwanted hair from areas such as eyebrows, upper lip, cheeks, ears, neck, underarms and bikini area. Removes hair quickly and safely. Includes comb attachment for 2mm or 4mm length and cleaning brush. It is lightweight, compact, and includes a convenient cap for storage. Perfect for travel! Great for removing unwanted hair from eyebrows, lips, cheeks, ears, neck, underarms and bikini area.