Philips Norelco Shaver 2100 S1111/81, Rotation shaver, Blue, ComfortCut Blade System, 4D Flex Heads, Buttons, Power, SH30 Philips Norelco Shaver 2100 S1111/81. Shaver system: Rotation shaver, Product colour: Blue, Shaving system technologies: ComfortCut Blade System, 4D Flex Heads. Power source: AC/Battery, Battery type: Built-in battery, Operating time: 30 min