Manual
Page 4
...the case back is a four-digit number that indicates the model of a movement (mechanical part of your watch. 4 English ■NAMES OF THE PARTS 9F83 Minute hand Hour hand First click position (date/day setting) Second click position (time setting) Second hand Crown Date 9F82, 9F62, 4J52 Minute hand Hour... a watch is mounted with "8J" or "4J". The mechanical caliber number starts with "9S", the spring drive caliber number starts with "9R" and the quartz caliber number starts with "9F". ※ Some quartz caliber number starts with an exclusive caliber. The Grand Seiko watch ).
...the case back is a four-digit number that indicates the model of a movement (mechanical part of your watch. 4 English ■NAMES OF THE PARTS 9F83 Minute hand Hour hand First click position (date/day setting) Second click position (time setting) Second hand Crown Date 9F82, 9F62, 4J52 Minute hand Hour... a watch is mounted with "8J" or "4J". The mechanical caliber number starts with "9S", the spring drive caliber number starts with "9R" and the quartz caliber number starts with "9F". ※ Some quartz caliber number starts with an exclusive caliber. The Grand Seiko watch ).