These robust 7x50 FMTR-SX2 binoculars are supplied with flat-field eyepieces. The patented eyepiece construction provides perfect image sharpness with a complete field-of-view. Excellent clarity and observational comfort are also benefits of this unique eyepiece design as well. The 23mm eye relief is another advantage which is especially useful for those who wear glasses. Fujinon's patented EBC coating creates such an enormously bright image that some of professional customers prefer the 7x50 FMTR-SX2 compared to simple night vision devices. Another benefit of the EBC coating is its high durability and salt-water resistance. The 7x50 FMTR-SX2´s mechanical design is outstanding.