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cvp33 18K Views
May 12, 2026 10:38 PM

44mm Deep Blue Daynight Diver PC Tritium Automatic Watch (Various)

$150

$399

62% off
+ $10 S&Hat Deep Blue Watches
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Deal Details
Deep Blue Watches has 44mm Deep Blue Daynight Diver PC Tritium Automatic Watch (Various Bezels & Straps) on sale for $149.99. Shipping is $9.99.

Thanks to Community Member cvp33 for sharing this deal.

Available:
Product Details:
  • 45mm case, 14mm thick, 22mm Lugs, 51mm L to L
  • Sapphire crystal
  • Seiko NH35 automatic movement
  • T100 tritium tubes
  • 200m water resistance
  • Lightweight polycarbonate case
  • Constant illumination without charging

Editor's Notes

Written by Nate650 | Staff

Original Post

Written by cvp33
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Deep Blue Watches has 44mm Deep Blue Daynight Diver PC Tritium Automatic Watch (Various Bezels & Straps) on sale for $149.99. Shipping is $9.99.

Thanks to Community Member cvp33 for sharing this deal.

Available:
Product Details:
  • 45mm case, 14mm thick, 22mm Lugs, 51mm L to L
  • Sapphire crystal
  • Seiko NH35 automatic movement
  • T100 tritium tubes
  • 200m water resistance
  • Lightweight polycarbonate case
  • Constant illumination without charging

Editor's Notes

Written by Nate650 | Staff

Original Post

Written by cvp33

Community Voting

Deal Score
+43
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Top Comments

3chunter
113Comments
15Reputation
Have a few watches from this brand. Quality for the price.
Go to Comment
MSH
1.9KComments
250Reputation
Deep Blue is the name
Go to Comment

Community Reviews

Deep Blue's Daynight comes across as a strong value tritium diver with sapphire crystal and an automatic Seiko NH35 movement. The brand's build quality and accuracy get praised, and the price looks especially sharp versus similar tritium watches or quartz alternatives. The carbon fiber reinforced polymer case is not metal, and the bezel and dial layout can feel crowded at a glance. It stands out most for buyers wanting a unique white faced automatic diver with tritium.

Common Questions (5)

  • Yes, it is described as a strong deal for tritium and sapphire crystal, especially at this price. The automatic movement and Deep Blue's microbrand reputation add to the value compared with similar quartz options.

    wingtsecvp33LivelyDolphin113

  • The listing is described as an NH35 automatic, but one comment questions whether it is a genuine Seiko movement or a clone. Another comment says Deep Blue appears to have improved the movement from Miyota to Seiko NH35 on this line.

    katicjOgreDave

  • The listings are the same watch line with different dial colors and different tube colors. The other color options are also priced the same.

    wingtsewingtse

  • The case is carbon fiber reinforced polymer, not metal. That matters if you want a lighter case or were expecting a traditional steel diver.

    scubasasquatch

  • It is positioned as a unique white-faced automatic diver with sapphire and a Seiko movement. One caveat is that the bezel action may not be as satisfying as on some similar divers.

    dj111

AI-generated summary based on comments from the community. Updated ago

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31 Comments

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May 13, 2026 2:57 PM
2 Comments
Joined Jan 2013
stuzerMay 13, 2026 2:57 PM
2 Comments
Quote from Syrinx View quoted comment :
Brand name in the title would be helpful
It is, the company is Deep Blue (it's not about the color) and it isn't as popular but has been around a while. nod
May 13, 2026 3:50 PM
1.2K Comments
Joined Feb 2004
SyrinxMay 13, 2026 3:50 PM
1.2K Comments
Quote from stuzer View quoted comment :
It is, the company is Deep Blue (it's not about the color) and it isn't as popular but has been around a while. nod
You are late to the party. I posted this shortly after the original posting which has since been updated.
1
May 14, 2026 11:25 AM
56 Comments
Joined Nov 2011
Player001May 14, 2026 11:25 AM
56 Comments
Quote from wingtse View quoted comment :
Deep blue is a good micro brand. This is a good deal with tritium, and sapphire crystal. If I don't already own many diver, I would buy it.The other color options are also the same price, if you like blue tritium tubehttps://www.deepbluewatches.com/dapctrau.html
How are these different than what OP posted? Are they all same movement or any you suggest?
May 14, 2026 10:26 PM
2.3K Comments
Joined Feb 2011
OgreDaveMay 14, 2026 10:26 PM
2.3K Comments
this is a great deal. I got an older model daynight for much more than this, albeit over 10 years ago and it came in a scuba case.

looks like they improved the motor from miyota to seiko.

I prefer the older look for the 3 6 9 12 markers and non scalloped dial.

borrowed someone's pic:
May 14, 2026 10:27 PM
2.3K Comments
Joined Feb 2011
OgreDaveMay 14, 2026 10:27 PM
2.3K Comments
I have too many watches and I'm still tempted to pick one up .. I already have the PVD bracelet after all
May 14, 2026 10:47 PM
169 Comments
Joined Jan 2017
Barewake2May 14, 2026 10:47 PM
169 Comments
Quote from jd2010 View quoted comment :
dayman fighter of the nightman
Champion of the Sun
May 15, 2026 1:57 AM
6 Comments
Joined Dec 2020
LivelyDolphin113May 15, 2026 1:57 AM
6 Comments
I've never seen a T100 watch at this price ever from any brand! The fact that it's an automatic is a plus in my book. Of course I just bought a similar Isobrite T100 watch at double this price a week ago. I still ordered one of these.

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Pro
May 15, 2026 5:17 AM
705 Comments
Joined Oct 2006
cathmandan
Pro
May 15, 2026 5:17 AM
705 Comments
Quote from LivelyDolphin113 View quoted comment :
I've never seen a T100 watch at this price ever from any brand! The fact that it's an automatic is a plus in my book. Of course I just bought a similar Isobrite T100 watch at double this price a week ago. I still ordered one of these.
It's been a long while since I've had a tritium watch. T100 has to do with the gas tubes?
May 15, 2026 8:45 AM
877 Comments
Joined Dec 2014
ras1234May 15, 2026 8:45 AM
877 Comments
I have two 1000-meter-Deep Blue watches with the Miyota 9015 auto movements. They are super accurate and built like a tank. Great brand.
May 15, 2026 10:50 AM
219 Comments
Joined Oct 2024
FreeBird77May 15, 2026 10:50 AM
219 Comments
Marathon Pilot Navigator is way to go if you desire tritium hands.
May 15, 2026 11:08 AM
67 Comments
Joined Apr 2010
wingtseMay 15, 2026 11:08 AM
67 Comments
Quote from Player001 View quoted comment :
How are these different than what OP posted? Are they all same movement or any you suggest?
They are same line, just different dial colors, diff tube color.
May 16, 2026 8:00 PM
409 Comments
Joined Nov 2019
CosbysQuaaludesMay 16, 2026 8:00 PM
409 Comments
Would have been a win if they used the VH31 sweeping quartz instead
May 19, 2026 4:42 AM
84 Comments
Joined Mar 2024
LavenderJuice2071May 19, 2026 4:42 AM
84 Comments
Is not having a metal case a big deal?
Pro
May 23, 2026 4:59 PM
705 Comments
Joined Oct 2006
cathmandan
Pro
May 23, 2026 4:59 PM
705 Comments
Quote from 3chunter View quoted comment :
Have a few watches from this brand. Quality for the price.
This is my first automatic. Is the crown supposed to keep spinning when it's pushed all the way in? The manual seems to indicate it should screw down tightly.

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Jul 3, 2026 8:26 PM
5.4K Comments
Joined Feb 2007
warezdogJul 3, 2026 8:26 PM
5.4K Comments
my bad
Last edited by warezdog July 3, 2026 at 01:30 PM.

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