Reactor Atom Mid-Sized Ladies Watch - White Mother of Pearl - Two-ToneNow with a versatile two tone design, this new Atom from the Reactor watch line is a stunning piece with durability as well as beauty. Genuine mother of pearl dial Solid forged 316L stainless steel with gold tone accents Day date window at the 3 o'clock position Screw down crown with crown guards (still water resistant when unscrewed, a feature unique to Reactor) Superluminova; For superior low light visibility, Reactor uses this unique Swiss material