There are two minor variations with this new offering from Nitecore, The Standard MCT version comes with a traditional premium quality wide headband, with the UL version coming in with an ultra slim headband for reduced white and size.
The wider headband comes with anti reflective markings, silicone bead for grip and to stop sweat in your eyes, perforated for ventilation. UL also has reflective and glow-in-the-dark markings but is designed to be even slimmer. The output of both head lamps is the same, the UL version is 47g in weight compared to the standard version which is 50g.
Built into the headlamp is a 700mAh lithium ion battery, which is rechargeable via USB-C. Runtime is around 45 hours at the lowest ultra low output of 6 lumens. The headlamp also includes small blue leds with four stage power level indicators.
Body material is made from high quality polycarbonate, it has been impact tested to one metre and is rated to IP66 water and dust resistance.
Size is 60mm x 34.4mm x 27.2mm and weight of 50g (standard MCT version). It’s a perfect size for trail runners and outdoor enthusiasts.

Range of 132 metres. 3 white light colour temperatures
Using their NiteLab MCT UHE LEDs, Users have a choice of three different white outputs, warm white 3000K, neutral white 4500K, cool white 6500K. There are two additional modes for the white light and sos and beacon. Also built in is an auxiliary red light output, this has two power levels and a slow flashing mode.
There are 4 power levels for the white light from 400 lumens down to an ultra low of 6 lumens; the auxiliary red light has two power levels 15 lumens and 5 lumens, the slow flashing mode is rated to 15 lumens.
Range is excellent for the output, up to 132 metres in the 400 lumens mode.
Using their TrueVision optical lens system, which gives improved beam performance as well as distributing the light more effectively For use at closer and longer distances. This system has 94% light transmission, and provides a beam spread of up to 100 degrees.
User interface is very straightforward thanks to two top buttons which have a different size and texture, allowing users to quick access the lowest output and access the power levels and strobe modes. It's also possible to lock the headlamp out so that accidental activation is no longer a problem, Nitecore also supply a diffuser which can give a similar output to a camping lantern (more spread out), and this can also be used to store the headlamp and other items like the charging cable.

Nitecore NU25 MCT and MCT UL Headlamps – Key features
> 2 model variants, one normal with wide headband, one ultra light with slim headband.
> 4 main White outputs up to 400 lumens power, with Aux Red LED’s with 2 levels and slow flashing
> White mode has SOS and Beacon modes
> TrueVision lens system for both spread and range with superior beam profile
> Built in 700mAh rechargeable Li-ion battery
> USB-C charging with 4 level charge/battery indicator
> Reflective marking on headband
> Wide headband has silicone strip and ventilated design
> Dual button with lock out mode
> Comes with diffuser and storage bag
> Premium PC body material
> IP66 Water and dust resistance
> Size: 60mm x 34.4mm x 27.2mm and weight of 50g (standard MCT version)