1 AAA battery-operated (not included)|A 2-height attachment comb helps make every grooming operation professionally precise|Limited 2 years warranty|One blade is wide for trimming the other is narrow for detailing or can be used to trim nose and ear hair|This pen-sized trimmer is portable and is the perfect grooming tool to travel with or leave in the gym locker or office desk|With this 2-blade trimming system you can accurately trim a mustache, goatee, sideburns, neck, eyebrows, and even body hair