The Scholl Velvet Smooth Diamond Callus Remover Crystal Blue is designed to effectively smooth rough, dry, and hard skin on the feet. This electronic device utilizes a diamond-coated roller head to gently buff away hardened skin, revealing softer, smoother feet. It offers a convenient at-home solution for pedicure maintenance, perfect for regular use to keep heels and soles feeling rejuvenated and well-cared for.