100° 20mm Waterproof Eyepiece Accessory Type_Focal Extender the Trek-Light comes with a

the Trek-Light comes with a pocket clip and an adjustable head mount that leaves hands free for other activities

providing clearer

or campsite

while also revealing crisp planetary details

100° 20mm Waterproof Eyepiece Accessory Type_Focal Extender the Trek-Light comes with aThese eyepieces with their huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay attention to subtle details for extended periods. These ultra wide angle eyepieces played a critical role in the military for aiming at targets, and their long eye relief counterparts helped reduce eye injury from recoil. Each 100 Series Argon Purged Waterproof eyepiece is internally sealed