Description 

It features adjustable tint sunglasses that use built-in Neutral Density (ND) filters to control light intensity manually. These glasses are designed with a mechanical gear system, often featuring 1-9 gears, allowing you to rotate the lenses to adjust the brightness and clarity according to the surrounding sunlight.

• Variable ND Lenses: These lenses borrow technology from photography, acting like a "dimmer switch" for your eyes to adapt to varying light conditions instantly.
• Manual Adjustment: Users can turn the gears on each lens to achieve the desired level of darkness.
• Polarized Protection: Most models include polarized lenses that reduce glare and block harmful UV rays, making them suitable for activities like driving, fishing, and outdoor sports.
• Retro Design: Many of these glasses feature a retro, "steampunk," or "Gojo-style" aesthetic with round metal frames.