I have used this maybe three times so it is in like new condition. It measures overall body fat percentage and can also measure local fat percentage in 24 different areas. You need to use the iPhone or Android phone app (available free) so you need to have either an iPhone 5 (or later) running IOS 8+, or an Android device running Jellybean 4.3 (or later). More information can be found here: https://www.skulpt.me/