Recognizes 4 different users Tracks weight, BMI, & Fat Mass Tracks progress & goals discreetly Weight: follow your data, can recognize 4 different users. Body Mass Index: measure your body shape based on your mass and height. Fat Mass: follow your fat mass to help you loose weight intelligently. Reporting: BLE & BT 4.0 compatible, on board memory for multiple days between synchronizations, set Goals, follow your evolution over time with automatic graphs. Over one year of tracking in the Connected Self application.