Sonic Tru Weigh Digital Scale The SONIC digital mini scale features a round, compact design that fits nicely in a pocket or travel bag. The hinged cover can be removed to use as a weighing tray for added versatility. Results are easy to read on the blue back-lit LCD in any lighting condition. This scale is perfect for arts and crafts, hobbies, for numismatics, and in cash and carry stores and headshops. Built-in overload protection helps prevent damage to the scale. Other features include power-saving Auto-Off after 3 minutes of inactivity, Tare/Zero feature for subtracting the weight of a container or expansion tray, and easy one-touch calibration. Includes two AAA batteries. Backed by a Ten Year Limited Warranty. Tru Weigh: Quality You Can Measure. Features: Max Capacity: 600g / Readability: 0.1g Easy One-Button Calibration Tare/Zero Convert Automatically Between: g, oz, ozt, dwt, ct, gn Built-in Overload Protection Backlit LCD for easy reading Power-Saving Auto-Off (180 sec) Weight: 0.2293 lbs