Feel the Difference with Own Harmony - Reveal Beautiful, Healthy, and Baby-Soft Skin Instantly\r\n\r\n\r\nAutomatic Power-off Protection\r\n\r\n When you apply too much pressure, the motor overheats or the roller head is stuck by cloth, yarn or hair, etc.\r\n The device will shut down automatically.This is to protect your skin.\r\n\r\n\r\nRechargeable & Fast\r\n\r\n Rechargeable & Fast - simply recharge the battery of cordless electric foot file with the provided adapter charging for 1 hours. 600mAh Li-ion battery can be used up to 100 minutes.\r\n\r\n\r\nChoose the 3 different roller head for best results\r\n\r\n The rough roller is designed for thick cocoon formed by the accumulation of many years, and tough callus or dry hard skin.\r\n The medium roller is designed for the part with less callus or the newly formed cocoon.\r\n The fine roller is for old cocoon on hand,cocked deadskin and daily maintenance.\r\n\r\n\r\nHow to replace the proper roller head\r\n\r\n To replace the roller head, ensure the unit is turned off and remove from the unit by pressing the eject button on the side of the unit.\r\n\r\n\r\nWarm tips\r\n\r\n 1. Please do not stay in one skin area for more than 3 seconds when using it, To avoid over-damaging your weak skin.\r\n 2. Grinding head is only suitable for hard and thick dead skin,such as heel,please do not use this product in normal skin parts.\r\n 3. The indicator light stops flashing and charging is completed(Charging time do not exceed 12 hours).\r\n 4.Whole body can be washed under the faucet,Do not submerge in water too often.\r\n\r\n\r\nPackage\r\n\r\n 1 * Electric Callus Remover\r\n 3 * Roller Heads: 1 Rough, 1 Medium and 1 Fine\r\n 1 * Cleaning Brush\r\n 1 * USB cable\r\n 1 * Instruction manual