I just got an STR80 last week. It has the 20-60 eyepiece and tunnels until ~25x. The 25-50 eyepiece does not tunnel; but, costs more. The STR80 does not have Swarovski's best glass. The STR80 has HD optics. The newer scopes,have Swarovision; but, no reticles. You can see Swarovski's marketing...