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Thread: Tritium Divers - Isobrite T100 compared to Tawatec T25

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  1. #1
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    Tritium Divers - Isobrite T100 compared to Tawatec T25

    I wear a lume or tritium watch to bed and prefer light weight, titanium or plastic. These two divers are plastic.

    I've had the Tawatec E.O. Diver T25 for about a year and love it. Specs are:
    46x12x33mm 47 grams on Maratac Zulu. (33mm is dial diameter)

    The Isobrite T100 is my newest acquisition. Despite finding T25 more than adequate, I had a curiosity about T100. I was drawn like a moth to the flame. Specs are: 47x14.2x33mm 60 grams on Maratac Zulu.
    (The two bezel tritium capsules and the second-hand capsule are T25)

    Both watches had crummy bezel ratchets which I easily fixed by prying off the bezel and snipping the square lugs off the plastic ratchet. They are still unidirectional but now move easily and smoothly. I also rounded the sharp corners on the strap lugs. Despite being plastic, they scratched my wrist.

    For the first comparison I went into a closet after being in sunlight for a few minutes. I could immediately read the T100 but not the T25. Even after 5 minutes of dark adaption I still couldn't tell the time on the T25. (I can immediately read an ordinary lume dial when going from bright light to darkness because the initial brightness of a charged lume dial is stronger than tritium).

    Next I noticed that in partial light the T100 lume showed nicely while the T25 lume was almost invisible. That alone made the T100 appealing.

    I was worried that when I wore it to bed it would seem blinding to my dark adapted eyes. An Amazon reviewer wrote, "You will wake up at 3:00 AM and scare the hell out of yourself!" But this wasn't my experience. It was bright, but not unpleasantly so.

    So it's a keeper, though I think the Tawatec is prettier and I like its thinner profile.

    Name:  Isobrite+Tawatec Lighted.jpg
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    This is how they look in partial light:

    Name:  Isobrite + Tawatec Dim Light.jpg
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    This is how they look in darkness when I'm only slightly dark adapted:

    Name:  Isobrite + Tawatec dark.jpg
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    This how they look when I'm fully dark adapted:

    Name:  Isobrite + Tawatec strong lume.jpg
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    Last edited by Precise; July 27th, 2012 at 08:40.
    gaijin, stevenkelby and thegorilla like this.

  2. #2
    Sponsor tacticalpen's Avatar
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    Re: Tritium Divers - Isobrite T100 compared to Tawatec T25

    Good review, I've had my ISOBrite for about a month now and love it. Still can't believe how much clearer and brighter the T100 is over the T25.

    I also really dig the sapphire crystal.
    Official ArmourLite AD at : http://www.tacticalwatchtechnology.com

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    Re: Tritium Divers - Isobrite T100 compared to Tawatec T25

    Quote Originally Posted by tacticalpen View Post
    Good review, I've had my ISOBrite for about a month now and love it. Still can't believe how much clearer and brighter the T100 is over the T25.

    I also really dig the sapphire crystal.
    The Tawatec is also sapphire.

    Alan

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    Re: Tritium Divers - Isobrite T100 compared to Tawatec T25

    What did you use to pry the bezel off and where did you pry on it at? How hard is it to re install?

  5. #5
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    Re: Tritium Divers - Isobrite T100 compared to Tawatec T25

    Quote Originally Posted by Tom Carey View Post
    What did you use to pry the bezel off and where did you pry on it at? How hard is it to re install?
    I used a knife. I first put tape on the case adjacent to the bezel. You can pry it anywhere, but I pried at about 1:00 o'clock on the case because I thought if I dinged the case that spot would be least noticeable when on my wrist.

    After it came partly up, I put some tape at 11 o'clock and pried it the rest of the way off.

    It easily pressed back on with my fingers.

    Alan

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    Re: Tritium Divers - Isobrite T100 compared to Tawatec T25

    Can you get the T100 in blue? That'd be tops for me

    Neil

  7. #7
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    Re: Tritium Divers - Isobrite T100 compared to Tawatec T25

    Quote Originally Posted by solar g-shocker View Post
    Can you get the T100 in blue? That'd be tops for me

    Neil
    Deep Blue has them, although availablility varies. Here's a shot from their web site comparing T100 to T25
    Name:  yhst-11234668104341_2220_123073500.jpg
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  8. #8
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    Re: Tritium Divers - Isobrite T100 compared to Tawatec T25

    Very cool that you posted this quick comparison....thanks!

  9. #9
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    Re: Tritium Divers - Isobrite T100 compared to Tawatec T25

    The Isobrite is nice enough, but I doubt if the watch has anything like the maximum allowed tritium on that dial, the tubes look too small, when compared with a Deepblue or Ball Aviator.

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    Re: Tritium Divers - Isobrite T100 compared to Tawatec T25

    Quote Originally Posted by ctujack View Post
    The Isobrite is nice enough, but I doubt if the watch has anything like the maximum allowed tritium on that dial, the tubes look too small, when compared with a Deepblue or Ball Aviator.
    When contemplating a T100 purchase, I thought the Android T100 diver was very handsome and available for only $250. But it also looked heavy so I went with the uglier, and more expensive, Isobrite because it was plastic.

    I find heavy watches uncomfortable after a few hours.

    Alan

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