The materials used in MS series calculators comply with European RoHS environmental regulations, an international standard.
High product quality prevents key malfunction due to drop impact if a calculator falls to the floor from a desk in the classroom or display (LCD) or key breakage if a calculator is accidentally crushed in a schoolbag. Since these calculators are products used as educational tools for long periods of time, materials that ensure robust key durability and prevent wear or fading of key markings are used to ensure product quality.
CASIO has established three criteria to ensure excellent quality in the MS series.
