Grand Seiko SBGV009 Caliber 9F82 Accuracy Report

nikidasi · 2015-07-19T04:37:34Z

Explore a 1-year accuracy report of the Grand Seiko SBGV009 with its 9F82 quartz movement. Discover real-world performance and collector insights.

Nikidasi shares a detailed one-year accuracy report for their Grand Seiko SBGV009, featuring the highly precise 9F82 quartz movement. This post offers valuable long-term performance data for collectors interested in the real-world accuracy of Grand Seiko's high-accuracy quartz calibers. Nikidasi's meticulous tracking, including the impact of a leap second, provides a rare glimpse into the exceptional stability of these movements.

Hi, all,

I bought this GS SBGV009 quartz one year ago (July 2014). Upon receiving the watch, I set it by referring to time.is.

This is the first pic taken on 17 July 2014.

photo GrandSeikoSBGV00957GS_WRUW20140717_zps267af0d5.jpg

About six months later, it was roughly 0.5 second behind (-0.5 second per 6 month). Pic was taken on 9 January 2015.

photo nikidasi_GrandSeikoHistorical57GSReissueGSSBGV009_Wristshot20140109_zpse05a8059.jpg

Today I checked again its accuracy against time.is and the result is 1 second ahead (+1 second per 1 year). Pic taken today.

photo nikidasi_Grand Seiko GS SBGV009 57GS reissue cal 9F82_Wrist shot 20150719_zpscgqjor1t.jpg

But I didn't adjust the GS to compensate for the Extra Leap Second which happened last month on 30 June 2015, 23:59:60. Which means the actual accuracy of my watch is 0 second per year for the first year (!). During the first year I also casually observed the deviation between the watch and time.is. It deviated to -0.5 second during the first six months, and then slowly gaining back to 0 second deviation.

Maybe the quartz crystal still went through aging process during the first 6 months? Or probably it's the "backlash" in the Temperature Compensator unit? I am not sure and would love to hear opinions from HAQ expert. Anyhow, the accuracy is awesome. Much better than the official spec for cal. 9F82 in which SEIKO "only" promises to deliver accuracy within -/+ 10 second/year. I am curious about others' GS 9F out there. Am I just lucky? Any accuracy freak around here care to share your observation?

Thanks.

Key Points from the Discussion

Another owner of the SBGV009 confirms similar impressive accuracy, noting their watch was spot on despite the leap second.
A question is raised about the durability of the crocodile strap after a year of use, as the contributor uses alternative straps to preserve theirs.
Another owner reports their SBGV009 is also within zero to one second fast after nearly a year, often using it to set other watches.
The exceptional accuracy of the 9F82 movement has led a collector to appreciate quartz movements in a way they never expected.

The Discussion

Ronald Held

Jul 19, 2015

for my yearly watch summaries I post January 1st or 2d for several years in the past.

kwcross

Jul 27, 2015

I last set my SBGV009 on March 8 (Daylight Savings, USA) and it would be spot on, if not for the leap second. Impressive, to say the least! A question for you... Over the past year, how as the crocodile strap held up? - I only use mine occasionally, to preserve it (either using an aftermarket flat-black strap or the bracelet)... Ken [URL=] [/URL] [URL=] [/URL]

Ambos

Aug 8, 2015

mine is approaching its 1st anniversary as well and using Watchville (earlier time and date) it is also in the zero to one second 'fast' area... Amazing! I usually use the watch to 'zero in' the other ones which are on rotation :o) Never imagined I could love a quartz movement!

Grand Seiko SBGV009 Caliber 9F82 Accuracy Report

Key Points from the Discussion

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