This On Balance mini scale for the jewel expert weighs up to 100 gr. with 0.01 gr. accuracy. It is in the attractive form of a jewellery case or make-up compact and features a detachable lid with stainless steel platform which also functions as the weighing tray. Now available in both red and black models. It features an auto cut-off after 180 seconds (3 minutes). 2 x AAA batteries are included so you can get weighing almost immediately. This mini scale has a clear blue back-lit LCD screen for easy readability.This jewel scale will weigh the following units: Grams (g), Pennyweight (dwt), Carats (ct), Grains (gn)Net weight: 84 gr. Dimensions: 10.3 x 7.3 x 2.0 cmThis precision scale comes with a limited 10 year warranty and 2 x AAA batteries are included.