An unusual SQ (Seiko Quartz) 4004 model, with green dial and original bracelet. Model reference 0903-8007


From the serial number on the case back we can accurately date this watch to being made in February 1975.


The 4004 (and 3003) range were launched in 1974, and were not cheap. This is only five years since Seiko launched the world’s first quartz watch on Christmas day 1969, and the technology was still being developed and improved. The 0903 movement was designed to be able to be stripped down like a mechanical watch, and to see it still working well after all these years is testament to the original design. The 0903 has quickset day and date, and the day can be set to three settings – English, Roman numerals and Kanji. We will install a brand new battery before sending the watch out to the new owner. The green dial is very nice, working well with the gold plated case, bracelet and matching hands. The bracelet has been cleaned in our ultrasonic bath, and has the original clasp which is showing some wear to the plating. The bracelet is short, and we have no spare links, but it could be swapped for a leather strap if preferred. The glass has a few small scratches.

This watch will be supplied with our branded presentation box and our Certificate of Authenticity.

Please see the HD video for more detail. All photos and videos are part of the description and are of the actual watch unless mentioned. We do not photoshop any pictures, and the images are copyright of and should not be used without permission.


Width with crown 38.6 mm

Width without crown 37.0 mm

Between lugs 18 mm

Lug to lug length 43.0 mm

Case Thickness 11.9 mm

Bracelet will fit a maximum wrist size of 175 mm. The bracelet can be sized for you if you give us your wrist size when placing the order.

All sizes are approximate.

Included with this watch is a 2 month guarantee and free delivery to UK addresses. If you live outside the UK we can still deliver to most countries. Please see our Worldwide Shipping information, or Contact Us. Payment can be made by most credit or debit cards, bank transfer or PayPal.

From 1st September 2021 we will be planting a tree for every watch we sell, working with the International Tree Foundation (Est 1922) to make this business positive on carbon. By buying anything pre owned you are effectively reusing what already exists, but this takes it further and makes us feel good.


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