Precision Head Series 9 Efficiency in every stroke, the Series 9 precision head allows you to reach any areas of your face - even the smallest and hardest areas under your nose or on your neck. 8 Direction Contour Adaptation 8 Direction flexible head and floating shaving elements, gently adapt to your skin for maximum coverage. The smart shaver head that reads and adapts to your beard. 4 Shaving Elements 3 Cutting Elements and the 1 SkinGuard work together to capture more hair in one stroke, with less strokes and pressure required while shaving, smooth shave no irritation.