Deep Dive: What is Seiko's LumiBrite?

LumiBrite is a proprietary luminous material developed and used by Seiko in its watches. It is applied to the hands, hour markers, and sometimes the bezel of a watch to make them glow in the dark, ensuring legibility in low-light conditions.

In simple terms, it's Seiko's version of "glow-in-the-dark" paint for watch dials, and it's known for being exceptionally bright and long-lasting.

Seiko 5 Sports SRPG29K1 Military / Trench Watch (similar to SRPG27K1, SRPG31K1, SRPG33K1, SRPG35K1, SRPG37K1, SRPG39K1, SRPG41K1 & SRPG42K1) - Another Winner From Seiko, A Review (plus Video)

I have been collecting Seiko 5 series of military inspired watches for many years. These watches are basic, robust and practical. In fact, I would recommend these watches as a good starter watch for someone interested in the world of horology.

The genesis of the Seiko 5 military inspired watches is the iconic SNK805K2 (the link to the review is here). Nevertheless, the journey for me start with the next iteration of the genre, the SNZG09K1 which I reviewed in November 2013 (the link to the review is here). For me, that watch was a great value for money piece of machinery that can handle any situation. From then on, I start to collect the examples of the genre as new models were introduced.

Recently, the brand, under Seiko 5 Sports, launched the latest series of military style watches. There are a number of models to choose from. Although I would usually go for a green dial version, unfortunately, none came with a bracelet. Instead I chose a blue dial version, the SRPG29K1 to take home with me.

Seiko Prospex 4th Generation Monster SRPD25K1 (or SBDY033) Dive Watch (similar to SRPD27K1/SBDY035 and SRPE09K1/SBDY045) - The Quintessential Tool-Watch, Review (plus Video)

In 2019, Seiko released the fourth generation Monster dive watches. In the initial release, three models were launched, the blue dial with bracelet SRPD25K1, and the black dial with silicone strap SRPD27K1, and the wavy blue dial special edition with bracelet SRPE09K1 (In Japan, the references are SBDY033, SBDY035 and SBDY045, respectively).

In my collection, I already have a model under each of the earlier generation. Gen 1: SKX779K1 Black Monster; Gen 2: SRP311K1 Sunburst Black PVD Monster; and Gen 3: SZSC005 Jade Monster. Although I should have made a decision back in 2019 to get one, I had to re-prioritized my acquisition plans as a number of other timepieces took precedence.

During the current unpleasantness of the Covid-19 pandemic, I had the opportunity to re-look at my original plans and I decided to get the SRPD25K1 to complete the Monster family.

Seiko Prospex Green Sumo SPB103J1 (similar to SPB101J1) - Continuing the Tradition with Further Improvement Possible, A Review (plus Video)

The third generation of the Seiko Sumo divers were recently released during Baselworld2019. The latest iteration has the two biggest changes in the design specification. First was the introduction of the new 6R35 movement to replace the workhorse 6R15 used in the previous two iterations. Second was the use of sapphire crystal instead of Hardlex crystal also used in the previous two iterations.

Unfortunately, this fact was not lost to fans and the demand for the watch went ballistic. Shops practically sold out even before they got the chance to display on their shelves (the pre-order market was just incredible). I tried to get one but I was not high enough on the order list to get one from even the first, second or third batches to be delivered. Not many watches have such a high level of demand upon launching. This could be an indication how this piece be acknowledged 30 years from now.

Sometimes it is good to have relationship with a few authorised dealers instead of just one or two. In this case, the many relationship I made over the years with a few vendors proved invaluable. One of them came through and got an allocation which was quickly set aside for me. Debra of Style Watch, Mid Valley Megamall, a big thank you!!!

Seiko 5 Sports Sense Style with NATO Strap SRPD85K1 - A Fresh Injection of Style, A Review (plus Video)

Seiko was the brand that brought good mechanical watches designed from the ground up for the masses. The launch of the Seiko 5 sub-brand 1963 was the key turning point that made Seiko a major world player in wristwatches. Despite kick-starting the quartz watch tsunami of the 1970s with the launched the world’s first quartz watch in 1969, Seiko mechanical watch division was able to comfortably weather the storm and strive. Established brands did not react at all or in time and within 15 years later, almost two-thirds of all Swiss watchmakers closed shop.

The name Seiko 5 actually signifies the the number of key attributes which Seiko adheres to; self-winding automatic movement, resistance to water, a day-date in a single window, a recessed crown, and a durable case. All this ns a package and manufacturing quality that defies the price point of a Seiko 5 which very few manufacturers can match. As such the Seiko 5 brand has won respect, affection and loyalty of people from all around the world.

Seiko 5 Sports is a branch of the Seiko 5 dedicated to more sporty and tool-like designs.

Seiko 5 Sports Automatic Blue Reference SRPB85K1 (similar to SRPB79K1, SRPB81K1, SRPB83K1) - A Great Starter Watch for a New Collector, A Review (plus Video)

The SRPB85K1 was launched in 2018 without much fanfare. Not surprising as Seiko tends to keep Seiko 5 product launches extremely low-key. Although there were a number of such releases last year, most were generally cosmetic changes to a basic design - last year, the bulk appears to be dive watch related.

One that caught my eye was the SRPB79 - 86 Series (please refer to a short introduction to the series as the end of the review), specifically the SRPB85K1.

The SRPB85K1 comes with a countdown timer. As the name suggest, the scale provided allows one to set a target time (within 60 minutes) and set the bezel so that when the minutes hand reaches "0", target time has been reached.

The countdown timer bezel is seldom seen on a Seiko sports watch. Most of the new Seiko 5 Sports launches throughout 2018 came with a movable bezel, either a dive timer bezel, a compass bezel or a 24-hour bezel.

Unfortunately, it is not as flexible as a dive timer. A dive timer can be used to track not only the amount of time spent doing something (like diving) but also be used to track a secondary timezone. It is because of this flexibility that watch makers tend to produce more dive timer equip watches.