The CHRONOMASTER Sport Skeleton is crafted in a 41mm stainless steel case with a scratch-resistant black ceramic bezel. Its gradient sapphire dial features the brand’s signature 3-6-9 tricolor overlapping counters. It reveals the open worked architecture of the El Primero 3600 SK, an automatic high-frequency chronograph movement with 1/10th of a second chronograph function and a power reserve of 60 hours. Delivered with a steel bracelet with micro-adjustable folding clasp and an additional black rubber strap.