Smart Digital Display: The electric callus remover includes a clear digital screen that shows realtime operating status and remaining battery life. This definition display helps you monitor usage and charge needs during use. DualSpeed Settings: Provides twospeed operation for flexible foot care. The lowspeed setting safely removes thin dead skin, while the speed mode efficiently tackles thick calluses. USB Rechargeable: Uses a convenient USB charging interface for quick energy replenishment. The 1500mAh battery offers longlasting performance, reducing how often you need to recharge. DiscomfortProof Foot Smoothing: The finegrit head buffs away hard skin with controlled pressure, helping prevent overexfoliation and harsh scraping. Practical use scenarios: Regular athome foot maintenance to keep feet smooth and comfortable between pedicures. Preparation for a professional pedicure or spa treatment by softening and reducing thick calluses. Travel or onthego care, with USB charging and a longlasting battery for extended use away from home.