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Ti4 V2


Product Description

  • Always have the light you need when you need it, with this compact and lightweight “penlight” style LED flashlight
    —great for a variety of applications.
  • Due to thoughtful design, the Ti4 always starts in Firefly mode—ideal for tasks like dentists using it as an endoscope.
  • The anodized aircraft-grade aluminum body is easy on the skin, feels good in the hand, and looks fashionable to carry.
  • The Ti4 is dependable and bright, with a max regulated runtime for 137 hours and a max output of 252 lumens.
  • Outstanding construction gives the Ti4 the durability to meet the IPX-8 waterproof standard.


  • LED: Cree XP-G2 LED with a lifespan of 20+ years of run time
  • Mode & Runtime (Tested with 2*Ni-MH/900mAh)

    -Firefly(0.3 lumens, 137hours)
    -Low (24 lumens, 12hours)
    -High (252 lumens, 51minutes)
    -Strobe (252 lumens, 90 minutes)

  • Working voltage: 0.9-3 V
  • Battery: 2xAAA Batteries(not included)
  • Peak Beam Intensity: 1120 cd
  • Beam Distance: 67 m
  • Waterproof: IPX-8 
  • Impact Resistance: 2 m
  • Material: Aircraft grade aluminum body structure with premium type III hard anodized anti-abrasive finish
  • Weight: 22.3 g (without battery)
  • Dimension: 132.9 x 14.2 mm
  • Accessories: 2x spare o-ring


  • Battery Installation
    Unscrew the light head, insert the batteries with the negative terminal down into the battery tube and then screw the light head back on.
  • Turn on /off
    Single press the tail switch to turn the light on/off.
  • Change modes:
    When the light is on, half press the tail switch (without hearing the “click” sound) to cycle through Firefly, Low, High, Firefly, Low, High, and Strobe.
    When the light is on, quick double click (within 1 second) the tail switch to cycle through Firefly, Low, High, Firefly, Low, High, and Strobe.
    If the second click is after 1 second but less than 10 seconds, the light will memorize the last mode. If it is after 10 seconds, the light will start from Firefly mode again.
  • Short Memory function
    The light will turn on in the last mode accessed within a 1-10 seconds interval, except for Strobe.

Product Reviews

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Showing reviews 1-15 of 30 | Next

  1. Very useful 5 Star Review

    Posted by on 21st Mar 2020

    On the recommendation of my grandson, I ordered 2 flashlights, one for my car, and one for my apartment. I am VERY pleased with the compact size, ease of use, and brightness of the beam. I feel safer having them.

  2. Fouled product 1 for 3 2 Star Review

    Posted by on 8th Jan 2020

    I have purchased many of these pen lights and only 1 still works the button quits working files a warranty claim and got a brand new light that well does not work the one I have that still works is great but it’s an early model all others have failed I would not recommend this light if they can not fix the button issues

  3. Great flashlight 4 Star Review

    Posted by on 6th Jan 2020

    I wanted to get a small flashlight I could slide in my pocket next to my pens. I use it about every day I go to work to do security checks.

  4. Best carry light I've found 5 Star Review

    Posted by on 17th Oct 2019

    Update. I liked my first Ti4 so much that I bought 10 more to give to my friends. Just as in many things in life, the best part of something can also be problematic. It's size. It didn't take long for me to lose my first one as did three of my friends, so far. I carried it hooked inside my back pocket. I should've known better after it pushed out once and hooked on upholstery twice. Now, I don't use the hook and carry it completely inside the pocket. Perfect!

    So, be careful. If you don't have a dedicated place where you can use the hook without it snagging on something, somebody else is going to get a great little flashlight. I just got two more for my sis. And no, I'm not a plant from ThruNite. Just telling my story.

  5. Excellent EDC Light 5 Star Review

    Posted by on 21st Sep 2019

    It's about the size of a thick pen, so it fits readily into a pocket. Good amount of illumination from a small light.

  6. Ti4 pocket rocket 5 Star Review

    Posted by on 1st Apr 2019

    The ThruNite Ti4 is a powerful, well made light that I use everyday. Superb quality and durable finish make this light a 5 star favorite.

  7. finally ! my EDC 5 Star Review

    Posted by on 18th Dec 2018

    The Ti4 finally the engineers got it right ! a simple pocket light that works ... my EDC
    1.decent run times and lumens .
    2.lightweight .
    3.a switch that doesn't accidentally come on .
    4.not a bunch of modes that no one really uses .
    5. fair price .
    6.FINALLY someone got it RIGHT !!!
    thankyou THRUNITE

  8. Best carry light I've found 5 Star Review

    Posted by on 15th Dec 2018

    I really like this flashlight! At 1/2" x 5 ¼” I can put this flashlight in any pocket that I have, with or without the clip, and not even know it’s there. But, it's big enough that I can easily find it in any pocket. I always have it with me and I use it more than I thought I would. The non-adjustable beam is great for a flashlight this size. There are distinct differences in the three brightness settings. The highest setting is brighter than I thought it would be.

    At first I wasn’t sure that I would like the way it operates. It only remembers your last setting for ten seconds. So basically it turns on to the "firefly" mode every time. Then, you have to either partially press the button, or, a quick off/on to increase the brightness. But, that is quickly learned so it is not a problem. Also, I thought the “firefly” mode was too dim to be useful. I was wrong. You will use it more than you think. It’s got strobe also.

    To me, you get a lot of flashlight for 20 bucks. More important, it is so easy to have it on you at all times no matter what you’re wearing.

  9. Ti4 4 Star Review

    Posted by on 6th Dec 2018

    Awesome light for edc.

  10. Best bedside light 5 Star Review

    Posted by on 31st Aug 2018

    The best of feature this Thrunite Ti4 flashlight is that it has no memory of the last used brightness. It will always start in firefly mode. That's great, because it doesn't disturb anyone or spoil my night vision when ever I turn it on. It's always on my bed stand. It runs fine on just two eneloop AAA batteries. Still it is able to produce at lot of light when needed.


    Posted by on 24th Jan 2018

    I would pay double the price if I could program the settings order to bright, medium, and firefly.

  12. Very Good with one concern 4 Star Review

    Posted by on 22nd Jan 2018

    Pen light is small sleek and works well with 2 AA. Fits pocket well with clip. Light seems to have three settings, firefly, medium and bright. All are perfect for such a small light. Only concern that the on/off and brightness control at the rear of the light, like a retractable pen wiggles and once on is hard to manipulate the brightness control. Other than that is is a good light.

  13. My great telling! 4 Star Review

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  14. My altruist being retailing! 1 Star Review

    Posted by on 6th Oct 2016

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  15. Excellent Product 5 Star Review

    Posted by on 5th Oct 2016

    I love this light.. Multiple settings, perfect size.. I like that it has memory for last light setting used though memory only lasts 10 seconds. After that it defaults to the firefly setting. you can just 1/2 press the knob lightly and it will cycle the settings easily. I also own another product from them that memory does stay at last used power when you turn it back on possibly will be added one day... Hint, hint...

Showing reviews 1-15 of 30 | Next

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