SH91 replacement heads are compatible with all Shavers Series 9000 (S9xxx). They are not compatible with the Series 9000 Prestige, which use SH98 replacement heads instead.
Reset your shaver very simply
1. Press the release buttons and detach the shaving head holder. 2. Turn the retaining rings counterclockwise and remove them. 3. Remove old shaving heads and insert replacement (notches should fit exactly onto the projections). 4. Place retaining rings back and turn them clockwise until you hear a click. 5. Insert the shaving holder back and close.
Replace the shaver heads and get back to 100% performance
Replace the shaver heads and get back to 100% performance.
Powerful, yet gentle performance with fewer passes
With up to 90,000 cutting actions per minute, the SkinProtect blades deliver a close shave with fewer passes* for more comfortable skin. The 45 high-performance blades are self-sharpening for a consistent shave every time.