In great condition. Works great. The Chirp Wheel Pro is a vibrating massage wheel that offers a deep massage + vibration therapy treatment to alleviate back pain and tension, improve range of motion, help you warm up better and recover faster. 3 different vibration options to deeply massage trigger points and reduce back pain Tractions the spine, increases blood flow, and accelerates recovery 8" diameter and 5” width that fits between the shoulder blades Spinal canal allows you to comfortably massage those hard to reach knots along the spine 2 hour battery life for sustained use