This watch is as slim as two-coins and still gets to pack twelve Swarovski crystals on its dial. Notat Steel is part of the world's slimmest watches in its price category club. No more than 4.8 mm to be exact. The brand prefers Obaku wearers to have peace of mind when it comes to their watch. That is why the entire Notat series sports sapphire crystal for increased protection and a scratch-proof experience.