The Olight Seeker 4 Pro torch has a massive 4600 lumen output torch, yet it’s still small enough to comfortably fit in your jacket pocket.
It’s an update to the very popular Seeker 3 Pro, with a little extra brightness and a new USB-C charging option.
I’ve done a roundup of pocket torches and and I’ve also done a roundup of keychain torches which introduces any technical terms I use – so please do check these articles (and videos) if you like.
Just like the Seeker 3 Pro it comes with a proprietary 21700 5000mAh battery installed. It would have been nice to see an upgraded version of this battery with extra capacity. The torch is pretty much exactly the same size as the Seeker 3 Pro – 133mm (5.24”) long with a 35mm (1.38in) diameter bezel. The body is a little narrower but this is quite a chunky 21700 torch.
It’s substantially larger than the Baton 3 Pro Max I reviewed recently, both in diameter and length.
Like all Olight torches I’ve tested, it feels well made and comes with an IPX8 waterproof rating and is 1.5m drop resistant. It’s constructed almost entirely of aluminium, with a comfortable rubber grip that wraps around the body of the torch.
I’ve not had any issues with my Seeker 3 Pro with a similar grip, but I’m always a little concerned this soft rubber will perish over time. The head is cranulated so you can see if you’ve left it on head down.
Unlike the Baton 3 Pro Max there’s no pocket clip. Instead it comes with a hard plastic holster that has a large integrated belt clip.
In the box you also get a bracket to store the holster, a USB-C charging cable and the user manual. It’s one of the few Olight’s I’ve tested that doesn’t come with a magnetic charging cable. This is available as an optional extra, or you can use any existing MCC3 magnetic charging cable you own. The holster bracket can be attached to a smooth surface with the 3M adhesive alone, or to a rough surface with the supplied screws.
The holster has an integrated magnetic charging pad at its base, and a USB-C port to charge the torch in the holster.
I’m very pleased to now see USB-C charging support, but I would have preferred it on the torch or battery itself. And I think for the price Olight could have included a magnetic charging cable as well – it’s still one of the most convenient methods of charging a torch I’ve tried.
The torch charges at up to 2A with the supplied holster and USB cable or with an Olight MCC3 magnetic charger. A full charge can take up to 4.5 hours. In my testing it was usually quicker than that even though the fastest charging I saw was 1.8A.
I don’t tend to use holsters, so it’s still something else that is completely proprietary, just like the magnetic cable, that you need to have with you to charge the torch. You can’t charge the proprietary batteries in a standard battery charger – the positive terminal is recessed.
I’ve had success using a little magnet in the recessed terminal, but even then these batteries are oversized with their protection circuitry so the only charger I have that fits them is the XTAR SC1 Plus. They won’t fit in my SkyRC MC3000.
Whenever you insert the torch into its holster with the torch switched off it will be locked so it can’t accidentally be turned on. When you remove it from the holster it’s automatically unlocked. You can turn it on with a single press of the power switch / rotary dial within ten seconds. After that you’ll need to rotate the dial 90° to unlock it. After turning the torch off, it will lock itself automatically after 10 seconds. Interestingly although the Seeker 3 Pro fits the holster, it won’t charge via USB-C
If you’ve used an Olight before, the user interface will be familiar to you. With the torch on, press and hold the power button to cycle between low, medium and high mode. The last used mode is memorised when you turn the torch on. If you double press the power button with the torch on or off, you’ll get to the 4600 lumen turbo mode. There’s no proximity sensor like on the Baton 3 Pro Max. But if you return the torch to its holster it will drop to its high mode from turbo.
If you turn on the torch with a long press you’ll get to the 5 lumen moonlight mode. This also unlocks the torch without rotating the dial. This is pretty bright for a moonlight mode unfortunately.
You can also use the rotary dial to change the brightness smoothly from the lowest to highest brightness level. The LEDs to the left of the button show the current brightness level, and flash when you reach maximum or minimum brightness. This stepless brightness level is also remembered. The LEDs to the right of the power button show the current battery level. They light up when you’re charging the torch, when you press the power button with the torch locked, when you unlock the torch, and when you turn the torch on. So it’s nice to easily see just how much battery you have left.
When you unlock the torch you’ll also see the memorised brightness level, and you can adjust this before you turn the torch on. This is useful to ensure you don’t turn the torch on at full brightness and destroy your night vision, or wake anyone up.
The LEDs have had an upgrade from the Seeker 3 Pro. If you look closely there are hundreds of tiny holes that light up. They’re not as bright as on the Seeker 3 Pro but plenty bright enough and they do make for a more modern appearance. They still only light up in discrete 25% jumps – I would have hoped they could be made to show the exact brightness level for the stepless feature as you dial up or down the brightness.
There’s also a timer mode. Choose the brightness level and double press holding the second press. The torch will blink once or twice alternatively each time you do this. One blink for a 3 minute timer, 2 blinks for a 9 minute timer. It’ll switch itself off automatically after 3 or 9 minutes. This is useful if you have the torch hanging in a tent or use it as a bedside light.
Finally there’s a strobe operated with a triple press of the power button with the torch on or off.
Performance
There are four LEDs behind the TIR (Total Internal Reflection) lens. Olight don’t specify the exact LEDs used, but they offer two variants. I have the black Cool White version with a 5700-7000K LED.
There’s also an orange version with the same LED. In black only, Olight offers a Neutral White variant with a 4000-5000K LED.
I measured the colour temperature of my Cool White torch in turbo mode with my colour spectrometer. It came in at a pretty cool 6673K with a very impressive, almost perfectly neutral tint of just -0.0001 Duv. At lower outputs the temperature of the LED was a little warmer but with a slightly green tint.
I measured the torch’s CRI or colour accuracy at 74, slightly better than its spec’d 70 but still way off many torches on the market with a CRI of well above 90. I’m yet to see a torch from Olight with a high CRI. The higher the CRI or Colour Rendering Index the more accurately you’ll see colour with sunlight having a CRI of 100 for perfectly faithful colour reproduction.
Next I measured runtime in turbo mode with a fully charged battery in my calibrated DIY lumen chamber.
Olight spec 4600 lumens dropping to the torches 1200 lumen high mode after 2.5 minutes and then 600 lumens for the remaining 25 minutes.
I measured an impressive 4805 lumens at turn on, 4684 lumens after 30 seconds which it held until around a minute in. It then dropped slowly to 1200 lumens after 2.5 minutes which it held fairly constantly for over an hour.
So it did meet its spec’d 4600 lumens which is based on the ANSI FL1 standard. This is the output measured 30 seconds after switching the torch on. But it got nowhere near the spec’d 135 minutes at 1200 lumen. Although it is worth noting that runtimes in real use, typically with a cooling breeze, will be better. It’s likely the torch is dropping its brightness at a certain temperature.
I did measure the temperature of the torch with a thermal imaging camera and the head does get just over 50°C as you can see.
You can see how Olight spec its other brightness modes and runtimes below. I did test the fully regulated 300 lumen mode in my lumen chamber and got just over 8 hours at the full 300 lumens before it turned off – no quite the full 11 hours Olight spec but still pretty good.
The Seeker 4 Pro is another floody torch from Olight. Although with its high brightness it still has a very respectable range of 260m (16,895cd) – a little up on the Seeker 3 Pro’s 250m.
You can see how its beam compares to the Olight Baton 3 Pro Max, the Thrunite T2 and the Seeker 3 Pro below. All these torches run off a 21700 battery. In use I really couldn’t see any difference between the Seeker 3 Pro and this new model.
Conclusions
The Seeker 3 Pro was one of Olight’s most popular torches, and the Seeker 4 Pro improves on it with a little extra brightness, and USB-C charging – albeit with the accompanying holster. I’d still like to see USB-C integrated into the torch itself somehow. And I would have also liked to have seen a new battery with extra capacity for longer runtimes. Especially considering I wasn’t able to confirm Olight’s runtime claims, in turbo mode at least.
Still, just like its predecessor the Seeker 3 Pro, this is still the torch I’d probably recommend to a new user wanting an easy to use, powerful compact torch for walking the dog or camping. It’s very comfortable in the hand, easily fits in a jacket pocket and even in my measurements can maintain over an hour at well over 1000 lumens – with a very bright 4600 lumen turbo mode when you need it.
If you want something a little more compact take a look at the Olight Baton 3 Pro Max. You sacrifice a little brightness and runtime but it’s still a very capable torch and I personally prefer the design. And a great budget option is the Thrunite T2. Again it doesn’t have quite the output of the Seeker 4 Pro, but it’s far smaller and less than half the price, even taking into account the often discounted price of the Olight.
Buy direct from Olight – it helps support this site and my YouTube channel and if you use the discount code TTM10 you’ll get 10% off non-sale items!
Olight store: https://www.olightstore.uk/s/REO74M US: https://www.olightstore.com/s/BT4PF6
Olight Seeker 4 Pro: UK https://www.olightstore.uk/s/EE2B36 US: https://www.olightstore.com/s/Q69GO5
Olight Baton 3 Pro Max: https://www.olightstore.uk/s/XNBFWU US: https://www.olightstore.com/s/W8HVEI
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