Lift & Trim comb guides hairs to the blades for an even trim. Stainless Steel Blades for long-lasting sharpness. DuraPower technology for a longer lasting battery life. Skin-friendly blades for smooth skin. 20 lock-in length settings, 0.5 - 10mm with .5mm precision. 60 minutes of cordless use. Detachable head for easy cleaning. Ergonomic design for easier handling. 3 year warranty, worldwide voltage, no oil needed.