Thermometer & body tester - the fat loss monitor displays the estimated value of body fat percentage by the bioelectrical impedance (bi) method and indicates the body mass index (bmi) range with the bmi classification bar.features measures body fat in seconds with clinically proven accuracy provides body mass index (bmi) & body fat percentage 9-person memory settings normal or athlete mode selection includes instruction manual & 2 aaa batteries 1-year warranty specifications battery life 1 year-approximatelybatteries 2 x aaahumidity 30 to 85% relative humidity operating; 10 to 95% relative humidity storagetemperature 50°f (10?) to 104°f (40?) operating; -4°f (-20?) to 140°f (60?) storageproduct name hbf-306c fat analyzerbrand name omronmanufacturer omron corporationproduct type fat analyzerproduct model hbf-306cmanufacturer part number hbf-306cweight (approximate) 8.11 oz approximate-with out batteriesdimensions 5" height x 8" width x 2" depth-externalstandard warranty 1 year limited package includes1 x hbf-306c fat analyzer 2 x aaa batteries 1 x instruction manual .