The Wahl 3-in-1 personal trimmer is battery operated which gives you freedom of movement. The flexibility of three different rinse clean heads makes personal grooming simple and means you can trim those hard to reach areas. The reciprocating head is for general trimming and touch ups, the rotary head is good for ear and nasal hair and the detail head is ideal for ear and eyebrow hair. Model number: 5545-427. Washable heads. 4 attachments: rotary nasal head, reciprocating head and detailer head. 2position eyebrow comb. Stainless steel blades. 3 heads. For wet and dry use. Cordless use. Accessories include: oil, . General information: Worldwide voltage for easy use around the globe. Battery powered. Batteries required 1 x AA (included) . Manufacturers 3 year guarantee.