D21

The D21 crystal is the dome variant for fitment of all 4 digit vintage Daytona references references such as 6239, 6241, 6263, 6265 etc.

We recommend cleaning with polywatch or mild soap and water. Avoid cleaning products that contain alcohol, ammonia, aromatics, and other abrasives. Alcohol can cause cracks and microfractures in the surface of the acrylics. Ammonia can eat into the surface of acrylic and leave it looking cloudy. Cleaning with proper solvents will assure optimal performance, clarity and longevity of your crystal.