Seiko Prospex Mini Tuna Solar Divers Watch SUT403P
Seiko Prospex Solar Divers Mini Tuna SUT403P1 Sporty, cool, and equipped with sophisticated technology, this diving watch from the Prospex collection by Seiko presents itself. The men's watch features a robust stainless steel case and is protected by a Hardlex mineral glass. LumiBrite luminous hands and indices ensure that you can always read the time well. The diving watch is water-resistant up to 20 bar and displays hours, minutes, and seconds. A solar movement operates inside the timepiece. Additional features include a unidirectional rotating bezel, a screw-down case back, and a screw-down crown. A silicone strap completes this high-quality watch. The Seiko Prospex – reliable, sporty, high-quality!
Seiko Prospex Solar Divers Mini Tuna SUT403P1 Sporty, cool, and equipped with sophisticated technology, this diving watch from the Prospex collection by Seiko presents itself. The men's watch features a robust stainless steel case and is protected by a Hardlex mineral glass. LumiBrite luminous hands and indices ensure that you can always read the time well. The diving watch is water-resistant up to 20 bar and displays hours, minutes, and seconds. A solar movement operates inside the timepiece. Additional features include a unidirectional rotating bezel, a screw-down case back, and a screw-down crown. A silicone strap completes this high-quality watch. The Seiko Prospex – reliable, sporty, high-quality!
Seiko Prospex Solar Divers Mini Tuna SUT403P1 Sporty, cool, and equipped with sophisticated technology, this diving watch from the Prospex collection by Seiko presents itself. The men's watch features a robust stainless steel case and is protected by a Hardlex mineral glass. LumiBrite luminous hands and indices ensure that you can always read the time well. The diving watch is water-resistant up to 20 bar and displays hours, minutes, and seconds. A solar movement operates inside the timepiece. Additional features include a unidirectional rotating bezel, a screw-down case back, and a screw-down crown. A silicone strap completes this high-quality watch. The Seiko Prospex – reliable, sporty, high-quality!
Seiko Prospex Solar Divers Mini Tuna SUT403P1 Sporty, cool, and equipped with sophisticated technology, this diving watch from the Prospex collection by Seiko presents itself. The men's watch features a robust stainless steel case and is protected by a Hardlex mineral glass. LumiBrite luminous hands and indices ensure that you can always read the time well. The diving watch is water-resistant up to 20 bar and displays hours, minutes, and seconds. A solar movement operates inside the timepiece. Additional features include a unidirectional rotating bezel, a screw-down case back, and a screw-down crown. A silicone strap completes this high-quality watch. The Seiko Prospex – reliable, sporty, high-quality!
in 12 offers
The lowest price for Seiko Prospex Mini Tuna Solar Divers Watch SUT403P right now is $351.00 at Shiels, compared across 11 retailers.
The all-time low was $348.00 on 30 Sept 2025 — today's price is 1% above the lowest ever. This is at or near its all-time low — a good time to buy.
Prices last updated 9 Sept 2026.
Last updated at 09/09/2026 04:36:53
Seiko Prospex SUT403P Mini Tuna Solar Divers - Shiels Jewellers
Free delivery
Seiko Prospex SUT403P Mini Tuna Solar Divers
Free delivery between 11–16 Sept
Seiko Prospex SUT403P Mini Tuna Solar Divers
Free delivery
Seiko Prospex SUT403P Mini Tuna Solar Divers
Free delivery
Seiko SUT403P1
Free delivery
Seiko Prospex SUT403P1 Urban Safari Tuna - Chronospride
Free delivery between 11–17 Sept
Seiko Women's Prospex Solar Diver's Navy Blue Silicone Strap Watch SUT403P1| Watchspree
Free delivery
Seiko Prospex Street Series Mini Tuna Safari Edition Divers Solar SUT403P1 SUT403P 200M Womens Watch
Free delivery
Seiko Prospex Men's Black Watch - SUT403P1
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Seiko Prospex Sut403p1 Street Solar Watch Baby Tuna Ladies Diver 38mm
Delivery $53.30
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originally posted on starbuy.com.au
My second watch purchase from Starbuy was another fantastic experience.The Seiko Prospex SRPF83K is a tough and different styled dive watch that has a real visual impact both on and off the wrist.The finish is spot on and the strap is very subtle and comfortable. It needs no break in period. The movement is robust and proven to be a Seiko mainstay. This watch is great value and worth owning in any collection of watches.
originally posted on starbuy.com.au
Following a few years back on how Seiko changed their line of watches, increased prices and QC issues, I was hesitant in pulling the trigger on this “SafArnie”. But oh my, this thing is simply amazing. It is seriously an awesome looking and wearing watch. If you’re hesitant, don’t be, if you have average to above average wrist size this watch will not disappoint. I think this model will become a classic. Oh, and by the way, Starbuy is probably the best online watch company going around. Their pricing and service is simply first class !
originally posted on ebay.com
I love this watch! I needed a quartz in my collection. I love the vintage look in a black pvd case. The bezel action is amazing. The lume is amazing. The silicon strap is super soft. It's great as a "baby tuna" diver that wears smaller than its size. I have a small wrist and it fits great. You can also take the shroud off and it becomes a 40mm that looks like a 39mm. Put it on a black leather strap or espresso brown strap and it looks killer. The style, finish and quality is awesome. It's my first solar watch and I recommend this piece.
| Band Material | Silicon |
| Band Colour | Navy Blue |
| Case Size | 38.7mm |
| Thickness | 10.4mm |
| Case Type | Stainless Steel |
Seiko Prospex SUT403P Mini Tuna Solar Divers - Shiels Jewellers
Free delivery
Seiko Prospex SUT403P Mini Tuna Solar Divers
Free delivery between 11–16 Sept
Seiko Prospex SUT403P Mini Tuna Solar Divers
Free delivery
Seiko Prospex SUT403P Mini Tuna Solar Divers
Free delivery
Seiko SUT403P1
Free delivery
My second watch purchase from Starbuy was another fantastic experience.The Seiko Prospex SRPF83K is a tough and different styled dive watch that has a real visual impact both on and off the wrist.The finish is spot on and the strap is very subtle and comfortable. It needs no break in period. The movement is robust and proven to be a Seiko mainstay. This watch is great value and worth owning in any collection of watches.
Following a few years back on how Seiko changed their line of watches, increased prices and QC issues, I was hesitant in pulling the trigger on this “SafArnie”. But oh my, this thing is simply amazing. It is seriously an awesome looking and wearing watch. If you’re hesitant, don’t be, if you have average to above average wrist size this watch will not disappoint. I think this model will become a classic. Oh, and by the way, Starbuy is probably the best online watch company going around. Their pricing and service is simply first class !
I love this watch! I needed a quartz in my collection. I love the vintage look in a black pvd case. The bezel action is amazing. The lume is amazing. The silicon strap is super soft. It's great as a "baby tuna" diver that wears smaller than its size. I have a small wrist and it fits great. You can also take the shroud off and it becomes a 40mm that looks like a 39mm. Put it on a black leather strap or espresso brown strap and it looks killer. The style, finish and quality is awesome. It's my first solar watch and I recommend this piece.
Good watch for women that work in environments that are exposed to elements, reasonable lume, glass not protected by bezel so may be susceptible to scratching.Bezel quality quite good given the price of watch,(lines up,etc),comfortable to wear.Ordering and dispatch first class, in short would recommend,
I'm not a collector of watches, had a great solar powered titanium divers watch for more than 20 years until recently the battery died. Just wanted something with similar quality, small, lightweight and robust. This Seiko mini tuna fits that ask perfectly and also looks great. Night visibility is great, just the ring is a bit tight.
Hard to explain why this Seiko had caught my attention but it did. I have a rather stupid watch collection and most have all been excellent investments, buy the right watch at the right price and I can sleep at night but this one, I really love it for other reasons. Well, the MM300 SBDX017 is just so cool... from the case design to how small it wears really makes it a watch you can wear for most occasions. I have tried all the 20mm bands and like the watch enough I will pick up another just so I can have an everyday band and a fancy dress band ready to go. Also have a GS diver but like the MM300 better, it is a sleeper.
Just bought the Seiko Arnie which I was looking forward to. Unfortunately, as with the Seiko divers watch I had purchased from you recently, the second hand does not line-up with the hour and minute markers (in this case, it is very noticeable). Apparently, this is very common with Seiko watches, which I find disgusting when you have just spent £500 on a watch. No more Seikos for me. Do you perform any quality checks before sending them out?-------Reply from First Class Watches:Hello,I am very sorry to hear you are unhappy with the second hand alignment on your Seiko watch. We try very hard to provide a high level of service, and all our staff are trained to do basic quality control as the watch is being packaged.Unfortunately we do find that some quartz ... MoreJust bought the Seiko Arnie which I was looking forward to. Unfortunately, as with the Seiko divers watch I had purchased from you recently, the second hand does not line-up with the hour and minute markers (in this case, it is very noticeable). Apparently, this is very common with Seiko watches, which I find disgusting when you have just spent £500 on a watch. No more Seikos for me. Do you perform any quality checks before sending them out?-------Reply from First Class Watches:Hello,I am very sorry to hear you are unhappy with the second hand alignment on your Seiko watch. We try very hard to provide a high level of service, and all our staff are trained to do basic quality control as the watch is being packaged.Unfortunately we do find that some quartz watches from all manufacturers do not always hit every marker due to manufacturer tolerances. Due to the precision involved, sometimes it is the case that it will hit markers in different sections of the dial but not all. However as the issue is extreme, I will mention the issue you have experienced with your watch to the person who packed this watch to ask that they identify any extreme cases.If you would like us to provide additional support with this, please do not hesitate to contact us.My sincere apologies for any inconvenience caused,
This SEIKO SNE543P1 is 'THE BEST DIVER'S WATCH I EVER POSESSED', it has a kind of a Military Style, but with a 'Sottovoce Vintage Classic' appearance and with a wearability that I did not experience in a long long time. I have had and currently have Omega, Zenith, Seiko Sportura, Marathon (both automatic and quartz), Rolex, Cartier, Bovet, Tavannes, Eberhard (1930's 1 pusher Chrono), Roamer 3 counter chrono, Lemania, Orfina etc. I like watches. I have been looking for the 'PERFECT' Diver's watch and when I first saw the SNE543 I was a bit reluctant due to the shroud on the case, but then I saw a YouTube Review on it from a Gentleman that removed the shroud, and I decided to give it a try. I FOUND THE PERFECT DIVER'S WATCH! And I Like it with the shroud. The SEIKO ... MoreThis SEIKO SNE543P1 is 'THE BEST DIVER'S WATCH I EVER POSESSED', it has a kind of a Military Style, but with a 'Sottovoce Vintage Classic' appearance and with a wearability that I did not experience in a long long time. I have had and currently have Omega, Zenith, Seiko Sportura, Marathon (both automatic and quartz), Rolex, Cartier, Bovet, Tavannes, Eberhard (1930's 1 pusher Chrono), Roamer 3 counter chrono, Lemania, Orfina etc. I like watches. I have been looking for the 'PERFECT' Diver's watch and when I first saw the SNE543 I was a bit reluctant due to the shroud on the case, but then I saw a YouTube Review on it from a Gentleman that removed the shroud, and I decided to give it a try. I FOUND THE PERFECT DIVER'S WATCH! And I Like it with the shroud. The SEIKO SNE543 is a 200mt Diver's Watch, it has a 'Vintage but not too much' aestheticism. it wears perfectly comfortable on wrist, and it is pretty slim with it's 12,3mm thickness. On top it is light in weight with a STUNNING DIAL, a '120 Crispy Click' REVOLVING BEZEL (Lume pip with eyelet) (PERFECTLY Aligned) and PLUS: The Shape and Colour of the Hour Markers, Bezel, and Hands add that 'Flavour' to make it a 'Must Have' for the Watch Collector and for ANY Other Person looking for a GOOD LOOKING, RELIABLE, TOP QUALITY, ACCURATE, LOW-MAINTENANCE Wrist TimePiece To Proudly Wear & Like & Enjoy
The alignment and quality of the crown and additional dials on my watch were exceptional. However, the photo shows the colour of the strap to be a lighter shade of brown while the actual product is more of a khaki brown colour. I do prefer this more but was surprised at the difference in colour when I unboxed it. The fit of the watch is great but I would recommend going for a king turtle with an offset crown as the crown on this model does protrude into the wrist at times. Also it fits really snug for a watch of its size - my wrist is 19cm but a few of my friends have tried it on at 17cm without the watch slipping around or looking out of place.
This Baby Tuna has been part of my collection for 18 months and never fails to get weekly wrist time. It might be smaller than my usual dive watches..but its solid presence on the wrist, having a brushed aluminium finish; makes up for its diminutive size. Also..the photos anywhere online, fail to show the brilliant luster of the dial and overall quality finish. The accuracy well exceeds the published specs...never losing more than a second or two in a week. Might be a good choice for those wanting something a little different in this category.
| Band Material | Silicon |
| Band Colour | Navy Blue |
| Case Size | 38.7mm |
| Thickness | 10.4mm |
| Case Type | Stainless Steel |
