This Lifetrons Smart Digital Scale employs BIA (Bio-impedance Analysis) technology to have an accurate and consistent measure of essential body compositions including Weight, BMI, Muscle mass, Bone mass, BMR, Visceral fat, Metabolic age, Standard weight, Body fat. This is approved by govt of India, Model Approval No. IND/09/20/627 dated 26/11/2020. Verified and stamped by Legal Metrology Department of Maharashtra.Please use it at the same time during the day and under the same conditions as much as possible. Please avoid measurements- During or immediately after strenuous exercises Immediately after a shower, bath, or sauna With heavy alcohol consumptions During or immediately after engorgement During fever During the Measurement, please be barefoot first and stand straight. Wearing socks you will not have accurate results. Dirty feet may also affect measurement accuracy. Do not use if you have a pacemaker or artificial lung, or wear an ECG or any other medical device. Do not use if you are pregnant This model of Lifetrons smart Digital scale is not intended to use for children under the age of 18 Lifetrons smart scales should not be used to diagnose or treat any medical condition. Always consult your physician or medical professionals to determine what is ideal for you. Contact Lifetrons Customer Care for your queries. Warranty-1 Year for Manufacturing defects on product registration.The buyer needs to register the product for warranty .