COLLECTOR SUMMARY
COLLECTOR SUMMARY
A Seiko Perpetual Calendar GMT SBQJ005, built around the 8F56 quartz caliber and presented in a titanium case with a blue waffle dial and integrated bracelet.
The 8F56 sits among Seiko's most capable high-end quartz movements, combining GMT functionality, perpetual calendar logic, long battery life and practical travel-time adjustment in one package.
The titanium case, integrated bracelet, blue waffle dial and feature-rich 8F56 movement give this watch far more technical and tactile interest than a typical Seiko quartz.
For collectors looking for one of Seiko's most compelling late high-end quartz references, this is a strong example of the perpetual calendar GMT concept in its titanium Prospex-era form.
BUYING QUESTIONS
BUYING QUESTIONS
Originality is described as carefully and directly as possible based on what can be observed and verified. Where parts are believed to be original, replaced or uncertain, that should be stated in the listing.
Service status is only represented as stated in the listing. If a watch was serviced or checked, that should be mentioned explicitly rather than assumed.
Timing performance can vary by age, movement type and service history. Any measured rate or performance note should be understood as an observation at the time of listing, not a lifetime guarantee.
Price reflects a mix of rarity, condition, originality, reference desirability and the time spent sourcing, researching and presenting the watch accurately. Some vintage Seiko references are simply much harder to find in honest condition than others.
If you want more detail before buying, additional photos and clarification can be requested.
SPECIFICATIONS
SPECIFICATIONS
COLLECTOR NOTES
COLLECTOR NOTES
Part of 2005's Prospex line up, this watch was produced for two years only (2003-2005), the 8F56 movement GMT featured in this specific blue dial watch was a combination for 2005 only...It has a high accuracy quartz, perpetual calendar, huge 10 year battery life and a GMT related ability to correct for timezone changes or daylight savings time without affecting the minute/second hand. This watch just keeps on ticking without the need, paradoxically, to ever "set the time". Get whatever models you want and can find with this high end quartz movement and do it now because when they're gone they are gone.
Apparently Seiko decided that the 8F caliber was just too competitive with caliber 8J inside their Grand Seikos, so they were phased out. It is a sobering thought that as even Grand Seiko did not have the calendar programmed into the movement.. which one is the better value?
Indeed, there are many worthy 8F watches to compete with GS, the Red Alpinist for which you pay the same as a vintage Grand Seiko, the Prospex, the Landtrek or the Perpetual calendar. All of these are made of titanium and finished to a very high standard and usability. So, this is not merely a Seiko Titanium quartz... In fact, the Seiko Alpinist GMT Titanium SBCJ019 (long since discontinued) is one of the rarest models ever made, setting you back well over a 1000 dollars.
