APEXEL APL-JS28X 28X HD External Dual-adjustment Zoom Telescope Universal Telephoto Phone Lens

1. Optical magnification: 28X
2. FOV: 6.8 degrees
3. Prism material: K9
4. Number of lenses: 6 elements in 4 groups
5. Coating: Multilayer
6. Focusing range: 5 meters and above
7. Lens interface: M17xP0.75
8. Lens material: aluminum + plastic
9. Lens length: 159mm