American Weigh Scale AWS-100 Digital Pocket Scale, 100g X 0.01g Resolution Powered by 2 AAA batteries ( trial batteries included) The backlit LCD display helps make the numbers viewable and easy to read Flip-open lid protects the delicate weighing surface Please review the Product video under the product images for Instructions Backed by a powerful 10 year warranty Weighs up to 100 grams in 0.01 gram increments