"Premium Material: Made from high quality materials for continuous functions, efficient and easy to use. Wide Compatibility: Compatible with Philips PT710 PT715 PT720 PT721 PT722 PT724 PT725 PT726 PT727 PT728 PT730 PT731 PT732 PT734 PT735 PT736 PT737 PT739 PT786 PT810 PT815 PT860 PT866 PT868 PT880 AT810 AT811 AT814 AT890 AT891 AT893 AT910 AT911 AT750 AT751 AT752 AT753 AT754 AT757 AT758 AT798 AT891 AT926 etc. Notes d'utilisation: The shaver head should be replaced every eighteen months. Easy to install. Clean the shaver before installing. Perfect performance: Replacing your razor head results in a 25% better shave. Clean the product regularly for optimal performance. Replacement shaver head: The replacement head brings your shaver back to 100% performance and a closer shave."