SWAROVSKI STX SPOTTING SCOPE EYEPIECEMany people prefer the straight view of the STX eyepiece module because it allows them to observe and find moving targets, such as animals, more easily. It is also well suited to digiscoping and use in a car or stand.TECH SPECSSIZE & WEIGHTLength: 6.7 inWeight: 30.5 ozENVIRONMENT & CONDITIONSFunctional temperature: -13 to +131 degFStorage temperature: -22 to +158 degFSubmersion tightness: 13 ft (4m) water depth (inert gas filling)