Pocket scale weighs up to 333 grams (about 8 ounces, 1/2 lb.) within 1/10 gram accuracy. Backlit LCD Display. Weighs in grams (g), ounces (oz), or penny weight (dwt). Has tare function. This scale comes with batteries already installed and ready to go. Snap-on plastic cap to protect the scale. 3-1/2" x 2-38" x 5/8" thick.