[Luminous function] The hands of the watch are coated with luminous paint so that you can recognize the time even in the dark. It absorbs and stores sunlight and light from lighting equipment in a short period of time, supporting visibility in dark places. [Multi-functional]★Moon phase: You can tell whether it is day or night by the patterns of the sun and moon. ★Both local time display: The sub dial allows you to set the time in other regions, which is very convenient when traveling overseas. ★Waterproof: There is no problem with waterproofing in daily life. Sweat, washing your hands, rainy days, etc. are all OK. [Excellent Practicality] Equipped with a tourbillon, the time is accurate. The windshield uses high-quality sapphire glass and precision polishing technology to provide excellent corrosion resistance, acid resistance, gloss, and durability. The high-quality genuine leather band is stain resistant and easy to express your taste, and has a unique atmosphere, so you can create a more mature atmosphere. [Convenient self-winding mechanical watch] This product is a mechanical (spring-type) watch. Although it is possible to start the watch by winding the mainspring (30-40 turns), it uses a method called automatic winding, in which the internal mainspring is automatically wound by the swing or movement of the arm. (Please see the product description below for usage instructions and precautions) [Service] RORIOS is committed to providing the best products and services to our customers. Please rest assured that if there is any problem with the product while using it, we will respond quickly.