Purchased new last winter and used only twice. All accessories are included and have been tested to be in working order. I will include one button battery that was used for the test. Since I opened a new button battery, I think you will be able to use it for a while. The box has a slight crease. In addition, please understand that there is some wear and tear, such as the rubbing of the "sense you" lettering on the main unit clip, due to aging.