1. To maintain a good shaving effect, we recommend replacing the shaving head every 18 months 2. Environmentally friendly materials, durable, healthy and safe 3. Simple replacement: easily install a new shaving head - just click 4. Please clean the shaver before installation 5. Suitable for Braun electric shavers 200 / 100 series: 105 155 205 209 255 259 1007 1008 1012 1013 1501 1507 1508 1509 1512 2035 2040 2060 2540 2540s 2560 5459 5461 5462 5463 5464 5596 5597 (Note: Not compatible with Series 1 150 model)