Tortoise D28 Readers
- Best-in-class frequency lenses. Technology is infused in + blocks 45% of harmful blue light.
- CR39 lens.
- Superior hard coat for anti scratch durability.
- Anti-reflective coatings to mitigate reflections and glare.
- Super hydro-phobic and oleo-phobic coatings for anti smudge.
All readers come with our proprietary blue light blocking frequency lenses. At no extra cost to you. This technology:
- Is infused into the lens. Not coated on.
- Blocks 45% of harmful blue light at, and surrounding, the most harmful wavelength (455 nm). This is more than other brands. Ask and you'll see.
- Is in a nearly clear lens (which is hard to do).