Why choose our foot file ? 3 speed settings Strong power - Real 1000mAh large capacity lithium battery. Build-in LED Light Build-in mess-free vacuum absorption which absorbs callous dust, no need to do cleaning afterwards and prevents callus flying. Fast USB rechargeable Professional foot file can help you remove stubborn dead skin and rough horny skin on your feet easily. Three Different Replacement Roller Heads Fine roller head: Suitable for dead skin on hands and feet, or some delicate skin care. Regular roller head: Suitable for new calluses on feet and normal skin care. Coarse roller head: Suitable for stubborn thick calluses on feet, corn, and dead skin. PERFECT FEET CARE STEPS Wash your feet or soak them in warm water for 10 minutes, then dry your feet; According to the condition of your own skin, choose the appropriate grinding head to install on the body, then press and hold the switch button to select the appropriate speed and gently rubbing your foot till dead skin drop off ; Remember to apply a moisturizing cream and massage your feet slowly after using the product to bring better effect. Package Content 1 x Rechargeable Foot File 3 x Roller Heads 1 x USB Cable (No adapter) 1 x User Manual 1 x Cleaning Brush