Excellent condition, only used once. With the original box and all the accessories. The Lumen MF-V2-01 is an electronic breathalyzer designed to help you track your fat loss and metabolic rates accurately. It boasts an app-based display that provides clear and concise readings, with Bluetooth connectivity for easy tracking of your progress over time. This device is tailored for those seeking a precise measurement of their metabolic status, with a focus on providing reliable data for informed health decisions.