The SEIKO PROSPEX Diver Scuba Diver’s 1968 Heritage GMT (model: SBEJ029) is a mechanical automatic watch powered by Caliber 6R54. It features a dual-time (GMT) display via a 24-hour hand, 300m air diving water resistance, and a combination of a blue ceramic bezel and a white-silver dial, and it is a model that draws on the heritage of Seiko divers. Seiko officially describes it as a model exclusive to Seiko Global Brand Core Shops. This article outlines the SBEJ029’s specs based on official manufacturer information. Prices, stock, point rewards, and coupons can change, so check the sales page for the latest information.
Main specs of the SBEJ029 (manufacturer)
- Product name: PROSPEX Diver Scuba Diver’s 1968 Heritage GMT; model: SBEJ029
- Caliber 6R54, mechanical automatic (with manual winding), 24 jewels
- Power reserve approx. 72 hours when fully wound; accuracy +25 to −15 seconds per day
- 24-hour hand (dual-time display / GMT) and second-hand stop function
- 300m air diving water resistance; magnetic resistance
- Stainless steel case (DiaShield); thickness 13.3mm, width 42.0mm, length 48.6mm
- Unidirectional rotating bezel with ceramic insert
- Sapphire crystal (anti-reflective coating on inner surface)
- LumiBrite on the hands, indexes, and bezel
- Weight 188g; maximum wrist size 200mm
Design
The design pairs a blue ceramic bezel with a white-silver dial. As the name Diver’s 1968 Heritage GMT suggests, it is offered as a model that draws on the history of Seiko divers. The case is stainless steel with a DiaShield surface treatment, and LumiBrite is applied to the hands, indexes, and bezel. The blue and silver contrast is a color scheme that can easily serve as an accent with black-based or simple outfits.
Caliber 6R54 and approx. 72-hour power reserve
The Caliber 6R54 in the SBEJ029 is a mechanical automatic movement with manual winding. Seiko officially lists a power reserve of approx. 72 hours when fully wound, accuracy of +25 to −15 seconds per day, and 24 jewels. It also has a second-hand stop function. As an automatic watch, it winds with the movement of the wrist and also supports manual winding.
GMT (dual-time) display via a 24-hour hand
The defining feature of this PROSPEX GMT is the dual-time display via a 24-hour hand. In addition to the hour, minute, and second hands, it has a 24-hour hand, which Seiko officially describes as a dual-time display (GMT). It is a function worth checking if you are looking for a GMT watch for keeping track of the time overseas or in another time zone.
300m air diving water resistance and diver’s features
Water resistance is 300m for air diving. It has a unidirectional rotating bezel, a screw-lock crown, and a screw caseback, and is listed as magnetic resistant. Even if you are looking for a 300m water-resistant watch, also check Seiko’s official instructions to confirm the specs suit your usage environment.
42.0mm case, 188g, and sapphire crystal
The case measures 13.3mm thick, 42.0mm wide, and 48.6mm long, and the watch weighs 188g. The crystal is sapphire with an anti-reflective coating on the inner surface. The case has a DiaShield coating. How the size comes across depends on wrist size, so use the official dimensions as a guide.
One-push double-lock diver adjuster
The clasp uses a one-push double-lock diver adjuster, described as a newly developed diver adjuster. The maximum wrist size is 200mm. Check with the retailer or manufacturer about whether and how the size can be adjusted.
What to check when considering the SBEJ029
Seiko officially describes the SBEJ029 as a model exclusive to Seiko Global Brand Core Shops. Prices, stock, point rewards, and coupon terms differ by retailer and change over time. If you refer to the manufacturer’s official price, treat it as separate from the actual selling price on Rakuten.
Who it may suit
- Anyone looking for a SEIKO PROSPEX diver
- Anyone interested in a mechanical watch with a GMT (dual-time) display
- Anyone considering a dive watch with 300m air diving water resistance
- Anyone looking for an automatic model with an approx. 72-hour power reserve
- Anyone who likes a blue bezel × white-silver dial color scheme
- Anyone interested in Seiko’s heritage diver designs
Check the sales page for the latest prices, stock, point rewards, and coupons.
