The D1 in the strictly limited Mikkel Bang version . The Dragon DR D1 OTG has a thermo-formed cylindrical lens and vibrant Lumalens® lenses. The double-layer foam ensures high comfort, while the silicone strap provides the best hold.Lumalens® Red IonThe Lumalens® technology offers optimized colours and glare protection through an ionized lens coating. The hard coating is scratch-resistant and repels dirt, dust, oil, and water.Light transmission 6 %Bonus Lens Lumalens® ClearThe Clear lens provides perfect protection in poor visibility. Reduces glare, enhances contrast, and prevents early eye fatigue in heavily overcast conditions.Light transmission 83 %