The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Whether the foot callus remover will be worked effectively if the callus is very thick？ To solve this, you can soak your feet in warm water for a while before using the remover to soften the callus. If I sit unused for 6 months for this Callous Remover, and it will perform after recharging？ Off course, just make sure to charge it fully before use and if possible, and always clean the remover after each use to ensure it functions properly and lasts longer. What's inside the package? 1*Electric Exfoliator, 3*Different Rollers, 1*USB Charging Cable(Without power adapter), 1*Foot Brush for Pedicure, 1*Instructions, 1*Gift Bag Please do not hesitate to touch us for any missing or damaged. Where can I buy replacement roller heads? Please search the ASIN: B0DJPKYNS1 for replacement rollers