13 ESSENTIAL MEASUREMENTS - The RENPHO app measures weight, Body Fat%, BMI, Muscle Mass, Bone Mass, and more. It displays graphs that track progress in these various metrics. You can weigh anytime WITHOUT turning on the APP. The data will sync to the app once it is connected again! , , LONG-LASTING RECHARGEABLE BATTERY - With lithium battery takes only 3-4 hours to fully charge for a battery life of 2-3 months. Charge via any USB source. Rechargeable scale no need for purchasing batteries, save your money and the planet. , , SMART APP SYNCS WITH FITNESS APPS - RENPHO App syncs with Samsung Health Apple Health, Google Fit, and Fitbit APP. Millions of satisfied users along with your fitness journey. RENPHO app allows you to add an unlimited user account, one scale for the whole family! , , PREMIUM QUALITY: High accuracy scale equipped with auto calibrated high precision sensors measure increments. 4 sensitive electrodes, 6mm tempered glass platform. Easy to clean also lightweight, portable for you to carry around. Please mind the maximum weighing range of this scale is 396lbs or 180kg. , , Track your progress with charts and graphs, see your trend and compared to achieve your goals. The RENPHO app support Apple Health, Fitbit App and Google Fit, transfer your data to these apps within 1 second. Moreover, one scale can add unlimited users. Start a healthy life with RENPHO smart scale now.