Based on this product's specifications, here are some alternatives and similar models
Replacement blade for Adler AD2831 shaver — Blade for AD2831 (AD 2831.1)
Summary description:
Replacement blade designed for use with Adler AD2831 shaver. Matches the original blade unit (MPN AD 2831.1) and intended for cutting and trimming facial hair. Suitable for maintaining shaving performance by replacing worn or damaged blades. Useful for regular maintenance, restoring cut quality and ensuring consistent shave results with the compatible Adler AD2831 model.