1.Suck While Grinding- This electric feet callus remover is splash proof with vacuum cleaning system, no need to worry about flying dander when grinding feet. The foot grinder with built-in sponge, which can absorb dander. The dust collection tank and grinding head can be disassembled for cleaning.2.2 Speeds Mode- Electric callus remover deep clean. One key control, the light is green in low speed, it is suitable for the callus of feet and more delicate skin care in low speed, quick press the button to change the mode, the light is red in high speed, the high speed will be better for removing stubborn thick callues and dead skin.3.3 Replace Grinding HeadCallous removers for feet hasdifferent quartz sand grinding heads,rough grinding head can remover stubborn horny dead skin , medium grinding head can remover rough dead skin, fine grinding head use for daily care. You can choose suitable grinding head according to the skin to care,make your feet restore the delicate and smooth skin.4.Usb Fast Rechargable- Electric callus remover is cordless long time working. simply recharge the foot file with the provided usb charging cable.5.Solve Embarrassing Foot ProblemsOur portable electric pedicure tool buff away the dead skin to bring your sophisticated heel and beautiful feet without foot SPA, ideal for for men & women who looking for safe and professional removal of dead skin at home.