Obaku Gents Oktant OnyxOKTANT ONYX breaks the watch status quo with its unconventional 8 corner dial. Contrastive light grey and deep blacks create ONYX's unforgettable color combination. It features the best we can offer. Ultra slim design, just 4. 8mm thin. Ultra durable construction using sapphire glass and high grade stainless steel. Precision Japanese quartz movement to keep you on time. All packaged in a desirable and timeless watch. Case Steel Glass Sapphire crystal