USB CHARGING & BATTERY: This digital scale is an upgraded design with USB charging. It is very convenient for use and saves power making it last longer. It comes with 2 x AA batteries, which can be chosen according to your needs. MULTI-FUNTION DIGITAL SCALE: There are two swivel locks on the bottom of our toddler scale, and you can easily install or lock the detachable tray. Leogreen digital scales are not only suitable for babies, children, adults, and even baby pets or small pets, it is a very versatile product. HIGH ACCURACY MEASURE: Leogreen baby scale has a high-precision sensor with a measuring range of 0.1lb-220lb (50g-100kg) and an accuracy of ±0.02lbs (±10g), providing you with accurate and stable readings. With a 70 cm (27.55 inch) long tray and a free tape measure, you can effectively monitor and track your baby's weight and height growth, helping to ensure that your baby gets the right amount of food. SENSITIVE TOUCH BUTTON: The baby weighing scale includes ON/OFF, TARE, AUTO OFF, HOLD, and UNIT functions. It also can switch between KG/LB/OZ units. You only need to press the HOLD button that will lock in the weight when your baby moves. LARGE LCD BACKLIGHT DISPLAY: The baby scale with non-slip base has a large LCD with distinct numbers and bright blue backlight. You can easily read the numbers of this weight scale clearly from any distance or angle, even in dark place.