The MeoPix iScoping adapter is a revolutionary new tool for anyone wanting to capture long range images. The MeoPix iScoping adapter slips over the spotting scope or binocular eyepiece - cradling your iPhone 4/4s in perfect alignment to the optic - allowing your iPhone to capture amazing long distance images. Fits 44mm eyepiece. Works with: Bushnell Trophy XLT, Leupold Gold Ring, Meopta Meostar S1, Vortex Nomad, Leupold BX-2 Acadia & Rogue, Meopta Meopro 32/42, and Vortex Diamondback.