Seiko’s newest 5 Sports GMT is a colorway, a number, and not much else. HDB016 pairs a maroon sunray dial with a 24-hour bezel split between red and dark brown, runs the same Caliber 4R34 GMT movement as the standard watch, and stops at 5,500 individually numbered pieces for the US only. Price is $525, which is $30 over the regular SSK001.
Sales started November 2 through Seiko Boutiques and authorized retailers, and Seiko USA’s own store doesn’t list this one. Teddy Baldassarre’s listing already reads out of stock. A nickname arrived with it. Buyers are calling it the Dr Pepper for the maroon and red, and Seiko had nothing to do with the name. No soda tie-in exists here, official or otherwise. It’s a community label stuck on a color scheme, the same way earlier SSK colorways picked up names like Pepsi and Root Beer.
Price: $525
Where to buy: Teddy Baldassarre
Seiko launched the SKX GMT line in July 2022 with the black SSK001, the blue SSK003, and the orange SSK005 at $495, then added US Special Creations and warm-tone runs like the Root Beer SSK036. HDB016 is a numbered, US-only entry in that run, and the $30 step over the standard watch is the whole premium. No mechanical upgrade rides along with it.
Red over dark brown, in a 42.5mm SKX case
Case dimensions carry straight over from the standard SKX GMT: 42.5mm across, 13.6mm thick, 46.0mm lug to lug, with 22mm lugs and the crown at 4 o’clock. Hardlex covers the dial, water resistance is 100 meters, and a five-row stainless steel bracelet closes with a tri-fold clasp, a push-button release, and a security lock.
On the wrist it wears like every SKX GMT: wide, flat, and tall at 13.6mm. A five-row bracelet drapes better than the case shape suggests, and 46.0mm from lug to lug keeps the watch inside most wrists instead of hanging over the edges. Nothing about the fit is new, and for buyers who already wear an SSK, nothing about it needs relearning.
A bidirectional bezel carries the 24-hour scale, red for the day hours and dark brown for the night ones. That brown half reads close to black in dim light, which explains the early black-and-red descriptions. Brown is still the right call. It keeps the warm palette the dial starts, where a black half would cool the whole watch down.
A maroon sunray dial and a gold GMT hand
A sunray finish throws lighter and darker red across the dial as the light moves, so the watch reads burgundy in shade and brighter red in sun. Applied indices and the handset carry LumiBrite, the date sits at 3 o’clock under a magnifier, and the 24-hour hand is gold, matched to the gold accents on the sloped chapter ring.
A sloped chapter ring carries the 24-hour track the gold hand points at, so a second zone reads around the edge of the dial instead of crowding the center. Indices are big, the hands are bigger, and the magnified date is the same love-it-or-leave-it bubble every SKX GMT wears. In the lume shot, the gold GMT hand stays easy to separate from the silver hour and minute hands. Layout is unchanged from the standard watch, just in a color Seiko hasn’t run on this line before.
Caller GMT, with a 24-hour hand that adjusts on its own
Caliber 4R34 sits under a screw-down exhibition caseback, and each caseback carries its watch’s number in the run of 5,500. It’s an automatic with manual winding and stop-seconds, 24 jewels, a 21,600 vph beat rate, and about 41 hours of power reserve. Specs match the standard SSK watches because the movement is the same one Seiko has run in this line since 2022.
An exhibition back on a $525 Seiko is still a small gift. Caliber 4R34 is a workhorse, not a decoration, but watching a balance wheel work beats a stamped steel back, and the engraving around the edge is where an owner finds the edition number. One photographed caseback reads 4240 of 5500.
GMT function here is caller style. Its 24-hour hand adjusts on its own while the main hands stay on local time, so the watch tracks a second zone cleanly when you’re home watching another city’s hours. Fly somewhere and the setup flips on you: local time resets by hand, and the GMT hand needs resetting with it. Frequent travelers who live in a second zone will feel that. Everyone else won’t.
The standard SSK001 sits $30 under it
Underneath the color, HDB016 and the standard SSK001 are the same watch: same case, same Caliber 4R34, same bracelet, same 100 meters of water resistance. SSK001 wears a black dial behind a black and gray bezel, sells as regular production with no number on the caseback, and costs $495 at Seiko USA. If black does the job, the $30 stays in your pocket and the GMT underneath never changes.
| HDB016 | SSK001 | |
|---|---|---|
| Price | $525 | $495 |
| Dial | Maroon sunray | Black |
| Bezel | Red and dark brown | Black and gray |
| Edition | 5,500 numbered pieces, US only | Regular production |
| Case | 42.5 x 13.6 x 46.0mm steel | 42.5 x 13.6 x 46.0mm steel |
| Movement | Caliber 4R34, about 41 hours | Caliber 4R34, about 41 hours |
| Water resistance | 100m | 100m |
Price: $495
Where to buy: Seiko USA
So the $30 buys the colorway, the number, and the cutoff. Once 5,500 pieces are gone, the maroon dial leaves the catalog and the secondhand market sets the price. Buy HDB016 if the warm dial is the one you’d reach for and a numbered caseback means something to you. Buy the SSK001 if black does the same job, since the GMT underneath is identical either way. Skip both if a jumping local hour hand is how you travel. That need points upmarket, and no colorway fixes it.
Price: $525
Where to buy: Teddy Baldassarre
