Weigh Max BX-500 BlackBox Digital 500g x 0.1g Gram Jewelry Pocket Scale Made for weighing Jewelry, Coins, Gem, Laboratory, Nutritional Supplements The push up cover can be removed and be used as a tray to hold the things you are weighing Built in Back-lit LCD Capacity 500 grams Units; g, oz, gn, dwt Key functions on/tare mode Low voltage display Power: 2 AAA batteries