Philips QT4006 Trimmer is a perfect trimming device. Blades stay extra-sharp to always cut hairs neatly and effectively, but have rounded blade tips and combs to prevent irritation. Rechargeable only.Up to 45 minutes of cordless power after 10 hours of charging. Detach the head and rinse it under the tap for easy cleaning. Dry it before you put it back on the appliance. Set the trimmer at the lowest position for a perfect stubble, just 0.5mm long. Easy to select and lock-in length settings, 0.5mm to 10mm.