Electric Baby Nail Trimmer Kit with LED Light and 6 interchangeable attachments and files for various functions and types of nails: Pink - Super Fine grinding head: For 0 to 3 months (Soft type). Yellow - Fine grinding head: For 4 to 11 months (Medium type). Blue - Rough grinding head: For 12 months and up (Hard type). Cylindrical grinding head (For Adults): Grinding the nail edges. Metal grinding head (For Adults): Grinding the dead skin and calluses around nails. Soft polishing head (For Adults): Polishing nails and remove the tinger nails base dead skin. Healthier and beautiful nails and hands care for babies, infant and adults. Extremely delicate and practical for the first months of life of babies. Helps trim, clip and polish fingernails and toenails in seconds using safe, effective sand paper for all ages. Operated by 2 AA batteries. Batteries are not included. You can set speed (High/Low) and rotation (Clockwise/Reverse). Operating Instructions: Insert 2 x AA batteries. Choose grinding head according to your baby age. Attach the grinding head to the top of the unit. To switch heads, simply pull the current one off and replace. Hold your baby's finger / toes and trim the nail.