Seiko Pepsi bezel watches

“Pepsi” is collector shorthand, borrowed from the cola livery, for a bezel split red and blue. Seiko has never used the word. What Seiko publishes is the bezel material and colour, reference by reference, and that is what this page is built from.

Why red and blue, on two different kinds of watch

The split has two completely separate origins, and conflating them is why the search results for this are such a mess.

• ·On a GMT, it is functional. A 24-hour bezel coloured half red and half blue marks daylight hours against night hours, so a second time zone can be read as “morning there” rather than as a number. That convention predates Seiko’s use of it by decades and it is the reason the two-colour bezel exists at all.
• ·On a diver, it is decorative. A dive bezel measures elapsed time in minutes over one 60-minute rotation. There is nothing for a colour split to mark. When a Seiko diver has a red-and-blue bezel, the colours carry no timing information whatsoever — they are livery.

Which brings us to PADI. Seiko’s long-running Prospex partnership with the dive training agency produces Special Edition references in PADI’s own brand colours, which are red and blue. That is why so many of Seiko’s red-and-blue divers are PADI watches, and why the look is far rarer outside that partnership than people expect.

The references, and exactly what Seiko publishes about each

Two things in that table are worth reading twice. The SSK019 is the only functionaltwo-colour bezel here — a real 24-hour GMT scale — and Seiko publishes it as “bi-color” without naming the two colours. We are not going to name them for Seiko. If the exact colours are the reason you are buying, confirm them against the listing photographs before you order.

The fourth row is there as a control. The SRPL53 is also a PADI Special Edition and its bezel is green, which tells you the partnership is not locked to one palette. If you are shopping for “the PADI Seiko” rather than for red and blue specifically, it belongs on your list.

What a red-and-blue bezel costs you, structurally

Nothing, on the two divers — the colour sits on an aluminium insert that would exist anyway. But the insert material is the thing to look at rather than the colour. An anodised aluminium insert fades in sun and chips at the edges; ceramic does neither. Seiko does not currently publish a ceramic red-and-blue insert on any reference we track, so if you want the look, you are choosing aluminium. Seiko bezel types sets out what Seiko uses where, and the SRPF77 page shows what the ceramic upgrade looks like in black.

The second structural point: on both divers, the red-and-blue bezel comes attached to a genuine 200 m ISO 6425 certification with a screw-down crown. That is not a coincidence — PADI editions are built on Prospex divers. So the Pepsi search, on this site, lands you on real dive watches rather than on dive-styled ones. If you want the look without the certification, you are looking at the SSK019 instead, and it is 100 m with no screw-down crown.

The one everyone is actually thinking of

A large share of these searches is really about the discontinued stuff: the Pepsi-bezel SKX, the vintage 6105 and 7002 references, and the 5 Sports SKX GMT in its various bezel colours. None of those is current production. The SKX line ended in 2019 and what is on the market is used — which is a different purchase with different risks, covered in buying a used Seiko and spotting a fake Seiko, because a swapped bezel insert is one of the commonest ways a listing photograph lies. For what replaced the SKX in the current range, see Seiko 5 Sports versus the SKX.

How to decide, in one question

Do you want the colours to mean something?If yes, you want a GMT, and the SSK019 is the cheapest mechanical route to one — the GMT roundup covers the range and diver versus GMTis the page that settles which kind of watch you are actually shopping for. If no, you want a PADI diver, and the choice between the 45 mm Turtle SRPE99 and the 42.4 mm SRPE27 is a wrist-size decision rather than a specification one: both are 200 m ISO, both run the 4R36, and the Turtle’s 47.7 mm lug-to-lug is actually the shorter of the two footprints. The fit guide explains why. One more Seiko shape turns up constantly in colour searches and is not on this page because its published bezel row names a single colour: the Monster, whose case and lume are the reason people look for it rather than its bezel.

The three watches below are the ones this page is about, with their live prices. The SRPE99 and SRPE27 are the red-and-blue divers; the SSK019 is the functional GMT bezel Seiko publishes only as “bi-color.”