The all new SPECTRA model is a slight variation to the PASSION ED binocular. Both products are built to our high German standards, both providing excellent light transmission, color contrast and image resolution. The difference between SPECTRA and ED binoculars is the type of glass used for the front objective lens. SPECTRA binoculars front objective lens is made with high transmission glass, the PASSION EDs front objective lens is made with premium extra low dispersion ED glass. However, both are optically and technically brilliant. High-transmission glass Magnesium micro-bridge and body GPObright lens coating technology Lightweight and compact Waterproof, fog proof, and shockproof Tough aluminium eyecup tubes Custom-molded hard case