This is the XS Scuba Gauge Reader Down-view Design Scuba Diving Mask Features: Back to the original angled-back" down view design Improved closeup magnification with new single plane glass Unique design with +1.75 positive diopter magnification in lower one third of the lenses Double feather edged sealing surface Durable split window polycarbonate frame Includes mask storage box XS Scuba's Gauge Reader Mask incorporates magnification lenses of +1.75 into the bottom of each lens. This allows you to see normally through the main lenses and yet, the ability to look down and see everything bigger. Ideal for photographers, videographers, mature divers and just about anyone who could use a little extra visual boost. This version has improved close-up magnification with single plane glass and back to the original angled-back down-view-design. "
