The trimmer is included. The 9000 series and 7000 series differ mainly in the blades: Series 9000: Up to 150,000 cutting movements per minute. This series is particularly thorough, even with longer or thicker beards. Series 7000: Up to 90,000 cutting movements per minute. It offers a solid performance, but is less powerful than the 9000 series and is better suited to shorter stubble. The 9000 series also offers other advantages such as a pressure sensor (for pressing the razor too hard) and the BeardAdapt sensor which measures beard density 500 times per second and automatically adjusts the power.

The instructions (online) describe how the razor should be held for this zone (the other way round), so it works without any problems. I am satisfied with the shaver.

Hello Speckhofer, Thank you for your enquiry. The only difference between the two devices is the colour. Kind regards, Your Philips Care Team