The Phone Skope Universal Adapter is 1 of 2 pieces you need to connect your smartphone to your optics, so you can capture long-distance images and footage. This piece locks into the Phone Skope Phone Case (not included) for a rock-solid connection. Next the unique, ratchet-style locking mechanism adjusts to create a solid mount to your binoculars, spotting scopes, telescopes and more. Locks into the Phone Skope Phone Case (not included) Ratchet-style locking mechanism Ideal for binoculars, spotting scopes, and telescopes