3Pcs SH98 Replacement Heads ，Compatible for Philips Norelco， S9000 Prestige Electric Shaver SP9880 SP9820 S9721/84 S9311/27 S9721/89 S9311/84(2pcs)

Choose the appropriate blade: Ensure that the selected blade is compatible with the model of the shaver. Keep clean: Clean the shaver before replacing the blade. You can rinse with water or use a brush to remove any residue after shaving to ensure that the new blade can be installed properly and maintain hygiene. Safe operation: During the process of replacing the blade, pay attention to the sharpness of the blade and avoid direct contact with the blade by hand. It is recommended to use tools or wear gloves to protect oneself. Regular replacement: Based on the frequency of use and wear of the blade, it is recommended to replace it every few months or as the blade becomes dull. Compatible For Philips Norelco， S9000 Prestige Electric Shaver SP9880 SP9820 S9721/84 S9311/27 S9721/89 S9311/84