Reset and sterilized - ready for use! Includes daysy fertility monitor, case to keep safe for travel, two daysy auxiliary cords, one iphone to aux adapter, and a spare battery in case it needs replacement soon. No longer using and would love for it to support another family! Daysy is an intelligent fertility tracker that lets you get to know your very own menstrual cycle. Thanks to Daysy, you know exactly when you are in your fertile window and when you are not. Instructions for use not included but a pdf can be found online. Light blue staining on the back from the case I’ve kept it in. Works perfectly.