• Replacement head compatible with Philips SH91 Series 9000/8000 electric shavers and S9000 Prestige with angular head • Not compatible with round head models from the Series 9000 • The shaving head is divided into inner and outer rings, with a greater number of blades for increased shaving efficiency • Precision design allows the blade to perfectly adapt to the facial contour, ensuring an even shave without leaving unshaved areas • Easy and quick installation of the replacement head, making it user-friendly • Includes cleaning brush to keep the head in optimal condition • It is recommended, after installation, to apply a drop of lubricating oil to each head and let the shaver run for 10 seconds for better performance