Not genuine replacement heads
I rarely write reviews, but I felt the need to write one for these.  I used these once, and 1 out of every 10 hairs was ripped out of my face rather than cut.  Threw them in the trash after one use (I didn’t swap them until a few weeks after I got them, so the Amazon return window had passed).  Trust me - spend the extra $10 to buy genuine ones from the Phillips website instead of taking your chances on a Amazon knockoff.  The ones I got direct from Phillips give a noticeably smoother and less painful shave.
Rating: 1 stars