Specifications Weight: 385 g Size: 24 16 4cm (approx) Silver Height: 100-199.5 cm Weight: 10-199.8 kg Age: 10-99 years old Gender: Male Female Temperature of use: -10 C to 40 C. Storage temperature and humidity: -20 to 60 C Package include: 1 x Handheld Digital Body Fat Analyzer Health Monitor Wireless handheld lightweight portable easy to carry and use. Body fat percentage is calculated by the five data in the formula that are height weight age gender and the resistance value between 2 palms. Easy to read large screen with liquid crystal display. Personal profile set-up and memory makes monitoring quick and easy.9-person-profile memory.Display the correct result in 6 seconds. Measures your body fat percentage BMI body shape and basic metabolism. After inputting your personal data a measurement can be started by simply holding the grip electrodes and pressing the start button. Since the analyzer is built with a nine person profile memory each member of your family or team can track the success of their individual exercise routines. Body shape is categorized into: emaciated standard hide corpulent muscle corpulent and corpulent. Energy saving with auto shut-down function. Power supply:2 AAA batteries (not included) Not only a recommended household instrument but also a perfect gift for relatives and friends. Note: For the special groups such as athletes and pregnant women the body fat percentage and BMI cannot reflect the obesity correctly.