30mm Double Domed Sapphire CrystalSapphire ranks among the top of the list on Mohs scale, second to diamonds, when it comes to high resistant to scratching and abrasion. Additionally, given its very wide optical transmission band, these features make sapphire an excellent choice in watch crystal application. On top of a great material, adding anti reflective (AR) coating ensures you get the clearest and flawless view of your watch dial. A double sided AR coated sapphire crystal

This is the improved version

then at least a month to cure

Movement 4R36A (Automatic with manual winding capacity)

both quick-set

Each movement ships with a full-length threaded stem and a dummy stem with plastic crown

Filled with 100% Swiss Super-LumiNova® BGW9 Grade A — the cool blue charge that holds through the night

Anti-Reflective Coating Color Clear

This novel approach is invented by us and only we can do it

A blank slate for modders who finish their own dials

LIMITED EDITION · 100 pieces only

A popular upgrade from older 7S26/7S36 calibers

Style SKX007 diver hour