The Line Miner Pro benefits from our best lenses and widest field of vision, giving you the best visual advantage in the mountains. We've achieved this with our new single-coated lens design, which reduces distortion, refraction and reflection, and increases the field of vision by 20% compared to our Line Miner. Combine our cutting-edge lenses with our Switchlock Technology quick-change lens system, and you'll be ready for whatever comes your way. Every Line Miner Pro comes with a pack of two lenses, so you can change them easily, adapt quickly to changing light conditions and enjoy the mountains even longer.