The Cassini SS-C1570 Telescope and Galileo G-SPA Smartphone adapter kit lets you use the camera feature on your smartphone to take pictures or video through the optics of your binoculars. The Cassini SS-C1570 features massive 70mm objective lenses and brings images 15 times closer to you than the naked eye offering ample power and comes pre-packed with a binocular tripod and tripod adapter enabling steady hands-free viewing. The SS-C1570 is also a long eye relief binocular featuring 21mm of eye relief increasing the viewing comfort of all users. The prisms are positioned in a Porro prism design affording them increased depth perception over other binocular designs. Additionally, the SS-C1570 features fully multi-coated optics for improved glare reduction and further increased contrast & clarity, water resistant comfort grip rubber armoring, full range center focus and binocular tripod socket. Included with the Cassini SS-C1570 is a binocular tripod and tripod adapter, carrying case, neck strap, lens cloth and protective eye caps and the G-SPA. As well as mounting to the binoculars, the Galileo G-SPA Smartphone adapter lets you use the camera feature on your smartphone to take pictures or video through the optics of your binoculars, telescope, spotting scope, microscope etc. as well. It also allows you to mount your Smartphone on a standard camera tripod for hands-free video calls, family photos with everyone in the picture, or anytime you want to include yourself in the action. Fits most popular smartphones. The Cassini SS-C1570 features fully multi-coated optics for improved glare reduction and further increased contrast & clarity, a 4.7mm Exit Pupil and exhibits a minimum focusing distance of 60′. Linear Field of View is 231′ at 1000yds and Angular Field of View is 4.4°. The Relative Brightness Index (RBI) is 21.78 and the Twilight Factor is 32.40. Interpupillary Distance (IPD) ranges from 59mm to 75mm and Eye Relief is 21mm.