Smooth, tangibly pleasant Our most thorough shave, even at a 7-day-bart Experience a noticeably smooth and pleasant shave with the Philips Prestige of the 9000 series. Cuts up to 0.00 mm above the skin with the Lift & Cut razor system, while the SkinIQ technology adapts to any face contour, even with a 7-day beard? Main Features Power Shaver System Rotary Tractor Trimmer Yes Number of Shaver Heads/Blades 3 Shaving System Technologies NanoTech Dual Precision Blades Precision Strimmer Yes Wet & Dry Yes Replacement shear head SH91 Replacement shear head (Scherkopf) Period 2 Year(s) Design Product color Grey Washable Yes Built-in Display Yes Waterproof Yes Display Battery reading Display Yes Energy Source Battery Rechargeable Yes Battery/Battery Technology Lithium-I