The Seiko Prospex Mechanical GMT watch is a remarkable timepiece. Its caliber number is 6R54, and it features an automatic movement with manual winding. With a precision of +25 to -15 seconds per day, it keeps reliable time. It has a power reserve of approximately 72 hours (3 days) and 24 jewels. The watch offers useful functions like a 24 - hour hand for dual - time display and a stop seconds hand. The case is made of stainless steel with a super - hard coating. It has a thickness of 13.6mm, a diameter of 39.5mm, and a lug - to - lug distance of 46.4mm. The curved sapphire crystal has an anti - reflective coating on the inner surface. The hands and indices are equipped with LumiBrite for easy reading in low light. The band is made of cow steer, and it comes with a three - fold clasp with a push - button release. The distance between lugs is 20mm, and the item number is SPB379.
Using your Seiko Prospex GMT watch is straightforward. To set the time, simply pull out the crown and turn it to adjust the hour, minute, and second hands. The 24 - hour hand allows you to keep track of a second time zone easily. For the stop seconds hand function, pull the crown out to the appropriate position to stop the seconds for accurate time - setting. When it comes to maintenance, keep your watch away from extreme temperatures and strong magnetic fields. Clean the watch regularly with a soft, dry cloth. If you want to wind the watch manually, turn the crown clockwise gently. Remember, the power reserve is about 72 hours, so wind it regularly if you don't wear it often. And don't forget to have it serviced by a professional every few years to ensure its long - term performance.
