Digital Display definition digital display lets you intuitively grasp the device status, with realtime updates of battery level and working status for an efficient and convenient electric feet callus removing experience. 2 Speed Modes Two speed modes to match your skin sensitivity and needs. Low speed gently removes thin layers of dead skin, while speed effectively tackles stubborn calluses. Extended Battery Life Builtin 1500mAh largecapacity battery with USB charging support. This design reduces the need for frequent charging and provides extended, uninterrupted usage. Ease of Use Operate with a simple press. No experience or complicated settings required, making pedicures easy and enjoyable for beginners. Use scenarios At home for regular foot care and maintenance, keeping feet smooth and comfortable. While traveling or away from home, thanks to USB charging and long battery life. Before events or after long days, for quick maintenance and a refreshed feel.