Philips Original SH91/50 Rasierer Series 9000 Ersatzscherköpfe SH90/50 UK
Old part number was SH98 and then SH90. To reset the shaver, press and hold the on/off button for more than 5 seconds. i9000 8000 and 9000 Series. Easy to replace heads -. Fits i9000 Series.