The MAGIC SKY CONTROL in various Mercedes S-Class models utilizes SPD Smart Glass, which makes it possible to switch the transparency of the sun roof at the push of a button, from light to dark. When light, the roof is almost completely transparent and allows an open-air experience, even in the coldest weather. When dark, light transmission i.e. the proportion of outside light that is allowed through into the interior, is reduced to less than 1% and thus effectively diminishes heating up of the vehicle.
