ORIENT STAR Classic Moon Phase Automatic Watch RK-AY0101S ORIENT STAR Japan 【Product Details】 The power reserve duration has been improved to over 50 hours. Furthermore, visibility and readability have been enhanced by reviewing the length of the hour hand and the balance of the hand's center of gravity. This model is finished with a focus not only on design but also on ease of use, so you can use it with peace of mind for a long time. The biggest feature is the moon phase display at the 6 o'clock position. A moon phase wheel, featuring a deep blue representing the night sky, stars, and a moon motif that emits a gentle light, rotates in a 29.5-day cycle, representing the lunar phases from new moon to full moon. The dial is equipped with a semi-skeleton window that reveals the movement and a power reserve indicator. It is finished with functions and design that allow you to fully enjoy the appeal of mechanical watches. Model Number: RK-AY0101S Drive System: Automatic (F7M62/with manual winding) Case Material: Stainless steel Belt Material: Genuine crocodile leather Windshield: Double-domed sapphire crystal glass (SAR coating) / Back: Sapphire crystal glass Dial Color: Silver Belt Color: Black Size (H x W x D): Approximately 49 x 41 x 14mm Lug Width: Approximately 20mm Buckle Width: Approximately 18mm Belt Wrist Circumference: Approximately 14.5-20cm Weight: Approximately 83g Specifications: Water resistance for daily life (5 atm) Date display Operating time: Approximately 50 hours or more Average daily difference: +15 seconds to -5 seconds Second hand stop device Moon phase function Power reserve display function Number of jewels: 22 Magnetic resistance: Class 1 Screw back See-through back Made in Japan Accessories: Box, instruction manual, warranty card