Features:
• Three (3) optimized replaceable shaver blades (the cutting elements) ONLY
• The newly designed V-Track Precision Blades PRO position each hair in the optimal cutting position to deliver our closest shave, even on a 1-3 day beard
• For maximum shaving performance, it is recommended to replace your shaving blades once every 12 months
• Compatible with Philips Norelco electric Shaver Series 9000 and Shaver 8900
• After replacing shaving heads, you can reset the replacement reminder by pressing the on/off button for more than 7 seconds. Otherwise, replacement trigger will turn off automatically after 9 successive shaves