The Lumen Metabolism Tracker is an electronic breathalyzer that utilizes Infrared Spectrophotometer sensor technology to track metabolism. This unit is powered by a rechargeable battery and features a digital display, making it easy to read the results. The device is smartphone compatible and connects via Bluetooth for convenient usage. The sleek black color and CE certification ensure both functionality and reliability in tracking your metabolic rate through breath samples. Complete with instructions, this unit is a must-have for those looking to monitor their metabolism accurately and efficiently.