1. The outer frame / chain zinc alloy material, corrosion-resistant and wear-resistant, not easy to fade 2. HD optical glass lens, high transparency, clear magnification effect 3. Chain hook design, easy to wear 4. Material: zinc alloy, glass 5. Scope of application: look at the map, read books, jewelry appreciation, observation, etc. 6. Times: 5X 7. Diameter: about 42mm 8. Weight: about 24g 9. Size: about 5.6 x 4.5 x 0.6cm, chain length about 45cm