Easy to replace shaving heads
1. Open the shaver by pressing the "release" button; 2. Remove the retaining rings by turning them anti-clockwise; 3. Take out the old shaving heads and carefully insert replacements; check that the heads align exactly in the setting; 4. Replace the retaining rings and secure them by turning the lock clockwise; 5. When you close the shaving head properly, you will hear it click into place.