Astronomical|Versatile Compatibility:Supports a wide phone size range (62-105 mm), ensuring compatibility with smartphones. Precise Focusing:Spring-loaded base prevents buttons from stuck, offering precise focusing for optimal viewing. Eco-Friendly Materials:Crafted from plastic, rubber, and metal, this adapter is built to last and eco-conscious. Secure Locking Mechanism:Elastic base quickly and securely locks phones in place, preventing during use. Easy to Use:Long handle design prevents buttons from stuck, simplifying operation for users. Color: Black Material: plastic Package Contents: 1 set Telescope Microscope Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.