Nitecore UT05 Waist Light Review

Nitecore UT05 Waist Light Review

Nitecore has released the UT05 waist light, a velcro-backed, 4000K light handy for running and hiking, providing a 160° light output.

Official Specs and Features

Here’s a link to the Nitecore UT05 Waist Light product page.


There’s only one version.


As seen in this post, the Nitecore UT05 waist light is $35.95.  You should plan to add some sort of battery pack though and can add one at for $60. Here’s a Shareasale link to the Nitecore UT05 waist light.

Short Review

The Nitecore UT05 waist light is an interesting little light. I don’t think there’s much (if anything) like it on the market. Running off USB power seems like a good choice but at the end of the day, it’s not really an inexpensive setup if you buy Nitecore’s suggested NB10000. (Sidenote here about the Nitecore NB10000 – I do love that powerbank!) Carrying the UT05 with that powerbank could be a bit cumbersome. I’d rather see the waist light with a single 18650 for power and an additional USB power option.

Long Review

What’s Included

Nitecore UT05 Waist Light what's included

  • Nitecore UT05 waist light
  • Lanyard
  • Velcro strops
  • Manual

Note that this testing is based on what I received. I didn’t receive a battery and so I won’t be doing any runtime tests. I also didn’t receive the optional BLT10 Running Belt and so I can’t really show any in-action photos, either. But I’ll report the CRI and CCT and some other small facts, so maybe the post will be helpful anyway.

Package and Manual

You should take off the protective covers from these COB emitters!

Nitecore UT05 Waist Light LED cover


Build Quality and Disassembly

Nitecore UT05 Waist Light build

What you see above is one piece, and the UT05 doesn’t disassemble any smaller than that. Wouldn’t it be fun if those little LED modules each had USB-C and could be daisy-chained!?

The LED is a COB-style emitter.  I believe that the housing on this light is metal, but it’s hard to say.

Nitecore UT05 Waist Light LED

The package feels pretty robust.

Nitecore UT05 Waist Light side view Nitecore UT05 Waist Light side view

These two modules are separated by around four inches (or 6″, depending on who you ask) of cable.

Nitecore UT05 Waist Light two parts Nitecore UT05 Waist Light two parts

Size and Comps

Nitecore list sizes for the UT05 parts individually, as follows.

73 x 18 x 8.3mm (Part without button)

87.4 x 18 x 8.3mm (Part with button)

Total length: 750mm

The overall weight they list as 40.4g.

Retention and Carry

As this is primarily and only a waist light, that’s the only way to really carry the Nitecore UT05 waist light. It attaches to something (ideally the BLT10 Running Belt) by this hook and loop closure. Both parts of the UT05 have the hook side – the hard scratchy side.

Nitecore UT05 Waist Light velcro

I think that ‘hard side’ means the UT05 will connect to most things like bags which also utilize the Velcro connectors. This should increase the utility of the UT05 and make it useful for the back of a bike bag or something like that.

Nitecore UT05 Waist Light velcro back

Also included is this little lanyard.

Nitecore UT05 Waist Light lanyard Nitecore UT05 Waist Light lanyard

The lanyard seems to attach very specifically to this one spot near the USB plug. Nitecore calls this the “USB cable fastener.” The manual doesn’t seem to cover much past that.

Nitecore UT05 Waist Light lanyard

I would recommend buying the BLT10 running belt. It looks to add around $15 to the price. Unfortunately, there doesn’t seem to be a way to add this item without also adding the NB10000. As I said, I like the NB10000, but the cost of adding it isn’t insignificant!

Power and Runtime

Power is provided to the Nitecore UT05 waist light by a (“some”) USB source.

Nitecore UT05 Waist Light USB powered

I tested with some random USB source – in fact, I used my NB10000, which I have from review and love.

Modes and Currents

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Amps (from USB source)
High 400 5h30m 333 1.05
Low 200 13h 176 0.47

Pulse Width Modulation

Nitecore advertises this as a non-PWM light, and that seems to be true. This sawtooth isn’t PWM, and I can’t see it during use.

For reference, here’s a baseline shot, with all the room lights off and almost nothing hitting the sensor.  Also, here’s the light with the worst PWM I could find.  I’m adding multiple timescales, so it’ll be easier to compare to the test light.  Unfortunately, the PWM on this light is so bad that it doesn’t even work with my normal scale, with is 50 microseconds (50us).  10ms5ms2ms1ms0.5ms0.2ms.  In a display faster than 0.2ms or so, the on/off cycle is more than one screen, so it’d just (very incorrectly) look like a flat line.  I wrote more about this Ultrafire WF-602C flashlight and explained a little about PWM too.

User Interface and Operation

There’s a single e-switch for controlling the Nitecore UT05 waist light. This switch controls both modules – they are not controlled individually.

Nitecore UT05 Waist Light LED

Here’s a UI table!

State Action Result
Off Click No Action
Off Hold On (Low)
On Hold Off
On Click Mode Cycle (Low, High)

LED and Beam

Nitecore describes both of these as high CRI 4000K COB emitters.

Nitecore UT05 Waist Light dual LED

The output is very floody!  Nitecore says it’s 160° broad.

LED Color Report (CRI and CCT)

Nitecore has been accurate with the claims about CRI and CCT. The CRI is indeed high – above 90 on both output levels. The CCT is also great, at around 3950 for each mode.  This output should provide great casts and shadow while running or hiking!


What I like

  • COB is High CRI
  • COB is 4000K
  • User interface is easy
  • Powered by USB

What I don’t like

  • Powered only by USB
  • No way to attach without a separate purchase


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1 thought on “Nitecore UT05 Waist Light Review”

  1. There are actually a few other similar waist mounted lights. They are used for running in the dark. Ultraspire makes some. Kogalla is another one, and it came before the Nitecore.

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