APEXEL APL-20-40XJJ04 20-40X HD External Dual-adjustment Zoom Telescope Universal Telephoto Phone Lens

1. Model: APL-2040XJJ04 2. Optical magnification: 20X-40X 3. Viewing angle: 4.4 degrees -8.8 degrees 4. Lens structure: 8 elements in 5 groups 5. Lens coating: multi-layer coating 6. Focusing range: 5 meters and above 7. Lens interface: M17xP0.75 8. Lens material: aluminum alloy + plastic 9. Lens length: 178mm