1. Compatibility The universal mobile phone camera adapter is adjustable for smartphones with widths ranging from 54.6 to 97.9 mm. It is also compatible with any eyepiece featuring an outer diameter between 26 and 46.4 mm, including most binoculars, monocular frames, telescopes, and microscopes. An ideal phone camera connector for astronomy, birdwatching, or microphotography enthusiasts. 2. Easy Alignment: This phone camera telescopic adapter features a light hole for effortless alignment with your smartphone camera. It blocks scattered light, enhances image contrast, and delivers clearer, more detailed photos. A musthave telescope adapter for both amateur and professional photographers. 3. Practical Locking Button: For added convenience, our phone camera adapter includes a largediameter locking button. It simplifies and speeds up eyepiece adjustment and fixation. 4. Builtin Soft Sponge: The phone camera port is lined with soft sponge material to securely hold your smartphone without causing damage. This safeguards your device from scratches while maintaining a stable and clear view through your lens.