Little maintenance is required with these bathroom scales, simply step on to see your weight measurements as no batteries are needed. Built with a sturdy, solid base and anti-slip vinyl mat, this traditional scale has a large standing platform with generous foot room. Always make sure the nifty scales are placed on a firm flat surface, set to zero and use at the same time of day for accurate results. Extra large powder coated steel platform with an egg white finish Easy to read oversized 7.5-inch dial High 400 lb (180kg) capacity in 0.1lb (0.1 kg) increments Easily calibrate this scale by turning the dial below the readout until the measurement shows as zero.