Packaging may vary. 9 Pre–set lengths settings 1.5 to 18mm and Up to 40 minutes of cordless usage. For added reassurance, this trimmer comes with a 3 years guarantee. The trimmer has nine length settings so you can trim hair to your preferred length with ease, simply turn the zoom wheel on the handle until the length you want is displayed and your chosen length will be locked in. The convenient pop up trimmer is suitable for shaping hair around the chin and the sideburns area, so you can finish off your chosen style to perfection. Ceramic coated blades effortlessly cut the hair neatly and effectively for precise styling of beards and stubble.