For your consideration Seiko Diver's Instructions Book/Manual is a vintage (circa 1988. It is suitable for those who are looking for a detailed guide on how to use their Seiko Diver watch, which has a quartz movement and is equipped with calibers 4R15, 4R16, 4R35, 4R36, 7S26, 7S35 & 7S26. The book is not customized but does have a crease on the front and is a genuine Seiko product, specifically designed for the Diver style watch.