Two Power Source: Can use it by charging or plug in with USB cable, also use by battery. Extend standby time and more environmentally. 2*AAA batteries ( not included).The new digital kitchen scale has the protective film, tear it off before use it. Precise Measurement: The digital food scale has high-precision load sensors built in, which can achieve an accuracy of 1g. For the tare function, allowing you get an accurate measurement of added ingredients. Easy to Use: The digital kitchen scale is very user friendly and accurate. Quick unit convert from "g" to "oz", "ml","ml milk”, "lb", "oz" and get the results on the LCD display, makes it easy to operate and read even in the dark. Practical Design: The kitchen scale adopts stainless steel design, surface waterproof for anti-fingerprint and easy clean. It also has low battery display, overload display and automatic power-off. The non-slip base design is easier to use in the kitchen. What You Get : 1x food scale, 1x USB cable , guarantee with friendly customer service. If any issue, please kindly contact us for a solution. Electronic scales can accurately measure the weight of food objects.