Nitecore MT21C Flashlight

Nitecore MT21C Flashlight


My Rating



  • Good Knurling
  • Compact and Lightweight
  • Pocket Friendly
  • Powerful
  • IPX-8 Waterproof Rating


  • Clip is Easily Damaged
  • Gets Hot Quickly

The Nitecore MT21C Flashlight is one of Nitecore’s recent releases from the “Multi-Task” range of flashlights. It has a unique, angle-adjustable head. As with all Nitecore products, the threads are well-lubricated, which makes screwing / unscrewing the tail cap or battery tube a smooth, easy process. Thanks to the magnetic tail cap, the gold-plated spring is partially magnetised. If you want to remove the battery, when you unscrew the tail cap, the battery is stuck to it. This lowers the chance of the battery accidentally falling out when removing the tail cap.

What’s in the Box?

Nitecore MT21C Flashlight
The unboxing of the MT21C

In the box, you get:

  • Nitecore warranty card
  • Multi-lingual instruction manual
  • Two spare O-rings
  • Durable Nitecore lanyard
  • Heavy duty nylon holster
  • Black anodised titanium plated carry clip (reversible)
  • Nitecore MT21C flashlight
Nitecore MT21C Flashlight
Moisture absorber inside MT21C

The MT21C comes with a water absorbing packet inside the battery tube, which prevents a build-up of moisture while in transit.

The Head.

Nitecore MT21C Flashlight


Nitecore MT21C Flashlight

The main feature of the MT21C is the angle-adjustable head (shown above). Now, many companies make flashlights with the head set to 90˚, so that they can be attached to a headband. Obviously, many companies make flashlights with the head pointing forward. Very few, if any, have an adjustable head, so that you can choose the angle that best suits your needs. This, partnered with the magnetic tail cap, makes the Nitecore MT21C particularly innovative, as the designers of this flashlight have taken into account the fact that some people may need a work light that can stand on the tail cap or stick to any metal surface.

You can position the head at a 0˚, 22.5˚, 45˚, 67.5˚ or 90˚ angle. It is easy to adjust with one finger, but stiff enough to stay at the angle you need. I believe this is due to a spring-loaded pin, which then moves down into each “dimple” shown here:

Nitecore MT21C Flashlight
The back of the MT21C’s head

Magnetic Base.

The MT21C can be stuck to any metal surface (thanks to the magnetic base) or it can be hung up using the integrated metal loop.

This makes the MT21C ideal as a work light, for example for mechanics who need to work at something with both hands, as it can be easily attached to metal.

However, this light would also be ideal for hikers and campers, thanks to the titanium plated clip. Instead of using a regular flashlight, why not clip it to your backpack and angle the head to 90˚? Now you have a perfect, bright flashlight that illuminates everything in your path with the fantastic, neutral white flood?

The Lanyard.

The lanyard is black with the word “Nitecore” stitched on in yellow thread. It has a little black plastic slider, which allows the user to adjust the length, so it fits the user’s wrist perfectly.

The Holster.

The black Nitecore holster can be attached to a belt via the strong belt loop, or it can be attached using the strong plastic D-ring.

A non-slip rubberised material lines the interior of the holster, which prevents the MT21C from falling out if running or jogging.


Now, there are quite a few flashlights available on the market that boast a two metre waterproof rating. What better way to test this than to go for a swim with the MT21C? Will it pass the test or will it fail? Spoiler alert: it passed!

Nitecore MT21C Flashlight
MT21C underwater

The MT21C is also drop resistant up to falls of one metre. Measuring 131mm long, 25.4mm wide and weighing 103.5 grams (unloaded), you hardly notice the MT21C in your pocket.

Battery Indicator? Yes.

Nitecore MT21C Flashlight
MT21C battery indicator

The flashlight features reverse-polarity protection, which means that if you insert the battery the wrong way, it won’t damage the circuit.

Nitecore MT21C Flashlight
Inside the MT21C battery tube

When the battery is inserted, it flashes to let the user know how many volts remain, for example, it will flash three times, stop for two seconds then flash seven times. This means that there is 3.7V of power left. The working voltage is between 3.5V – 4.2V (inclusive) with an 18650 battery or 4.8V – 6.4V with two CR123 batteries. When the battery level is below 50%, the blue LED will blink once every two seconds.

Anti-Roll and Anti-Slip Features.

Nitecore MT21C Flashlight
MT21C diamond knurling

The body and tail cap features diamond knurling, which is deep enough to be effective in wet conditions, but not too aggressive so that it doesn’t catch and snag on clothing.

There are cooling fins near the head of the flashlight, which allows the heat to dissipate. There is also an anti-roll ring below the cooling fins. The head of the flashlight is bevelled, which, in a worst-case scenario, could be used to break glass.

Nitecore MT21C Flashlight

The MT21C also utilises an ATR (advanced temperature regulation) module, which protects the electronic components from being damaged by the heat produced on “high” or “turbo”.

Output and Modes.

Utilising a CREE XP-L HD V6 LED sunk into a smooth, coated, shiny aluminium reflector, the MT21C has a maximum lumen output of 1,000 lumens, peak beam intensity of 8,500 candelas and maximum throw of 184 metres. The beam has a good spill and a fantastic throw.

Nitecore MT21C Flashlight

The hotspot makes it easy to identify a target at range (thanks to the throw), with the spill illuminating the surrounding area.

There are five brightness levels and also three special modes. I have tabulated the output modes below:

FL1 Standard Ultralow Low Mid High Turbo Strobe Beacon S.O.S.
Output (lumens) 1 50 190 400 1,000 Same as turbo See turbo See turbo
Run time 700 hours 25 hours 7 hours 30 minutes 1 hour 25 minutes 1 hour
Throw (metres) 6 42 85 122 184
Intensity (candelas) 10 450 1,800 3,720 8,500

When the flashlight is turned on, it always comes on at the “ultralow” setting, so there doesn’t seem to be a memory function.

Improvements and Suggestions.

To improve the Nitecore MT21C, I would add a memory function, as it would make finding your desired output level faster, especially if you are wanting to conserve battery power. I think knurling on the head would be perfect, as it would allow the user to move the head easier in wet conditions, however this is not a vital improvement.

If it was possible, I would also like to be able to remove the metal loop and then reattach it when needed. Another interesting feature that I think would be useful is the ability to lock the head into place, so it stays at whatever angle you require, no matter how much force is applied. This would also come in useful if you needed to use the bevelled head to break glass or in a self-defence situation. All in all, this is a bright, streamlined light that is perfect for everyday carry. This light will be a perfect companion when I go hiking.

Here are some beam shots.

Beam Shots.

Nitecore MT21C Flashlight

The tree in this photo (near the lamp post) was approximately 100 metres away. The lamp post illuminated beside the tree was damaged and therefore was not affecting the shot. The light pollution was virtually non-existent.

If you want the Nitecore MT21C Flashlight for yourself, it’s available for purchase only on Amazon and on the Nitecore website. The RRP for this product is £59.95

Product sample provided by Nitecore in exchange for a detailed, unbiased review.

Thank you for taking the time to read my post. If you’d like to add a comment or thought on this post, please use the section below. I can also be contacted via the online contact form. Please subscribe for the latest reviews, news, and discounts. Please follow My Helpful Hints on TwitterInstagram Facebook too!