This is the custom made "phantom" sapphire crystal coating for all LUM-TEC M series. It can be fitted on any stainless steel M series model (will not fit tungsten models). The top side has an anti reflective coating, and the underside has a mirrored dark tint. This is effective for "blacking out" the face of the watch, yet still traps enough light inside to keep the glow burning at night! Amazing effect! The AR coating outside lets light in, and the mirrored inside traps in into the MDV lume. *if ordered for your LUM-TEC watch, installation is free. If added to your cart with your M series watch, we will install it by default. If ordered separately, please contact us for free installation schedule.
Your old sapphire will be used as a core. If you would like to keep your original sapphire, a $35 core fee will be assessed.