AOKULASIC (sometimes called Aukulasic) automatic mechanical wristwatch, featuring a "Skeleton" design that reveals the inner workings of the movement. Key specifications of the watch: Movement Type: Automatic mechanical, powered by wrist movement and requires no battery. Design: Semi-hollow dial with "Moon Phase" display or Day/Night indicator. Materials: Two-tone (silver and gold) stainless steel strap, with scratch-resistant mineral glass. Resistance: 3ATM water-resistant (for light daily use like hand washing) and equipped with luminous hands. Measurement: Case diameter is typically around 41mm.