Takes the guesswork out of formulating colour. Weigh all of your colour, developer and lightener with ease! Large screen, so you can see the weight clearly and concise. Improved battery Life. Operates off two AAA batteries. Quicker calibration/tare feature. Weight shown in g, lb, ml and fl oz. Weighs to the nearest 1/10 of and oz(1g). Elegant tempered glass top and non-slip feet for perfect stability.