ScubaMax MK-219 Arc
Because scuba diving is all about the sights, a scuba mask is quite possibly themost important purchase a diver will make. It is essential to try several masks in order to find the right combination of vision and comfort for you. According to ScubaLab, "With its budget price the Arc works equally well as a primary mask, especially for free divers, or as a backup mask for scuba divers." As of 2014, the cost was less than $50. It is a traditional dual-window mask that offers exaggerated V-shaped lenses for enhanced downward viewing, squeeze-buttons for easier strap adjustment and a respectable field of vision compared to other masks in its class.
by Michael Kerr livestrong.com