To maintain the maximum performance from your Philips shaver, replace your shaving heads every 2 years.
For all Norelco Spectra models: 8895XL, 8894XL, 8892XL, 8890XL, 8881XL, 8880XL, 8867XL, 8865XL, 8845XL, 8831XL, 8825XL