DWISS RS1 and RC1 Tourbillon are Swiss made watches using caliber Concepto 8950 Automatic Tourbillon with innovative and design awarded time display systems. They come with scratch-resistant sapphire crystal with double anti-reflection coating and Italian leather straps or stainless steel metal bracelet. Limited-edition to 10 pieces per model (RC1 or RS1), they have a two (2) Year International warranty and are water resistant to 10 ATM (100m).