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12V DC
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5 Years* Warranty

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Specification Table

Equivalent Wattage:
Input Voltage:
12V DC
Height (mm):
Diameter (mm):
Life Hours:
Beam Angle:
Warm White (3000K) and Cool White (6000K)
5 Years*

ProNXT MR16 LED Spotlight 4W, 300 Lumens Description

Featuring a sharp 45° beam angle and a 300 Lumen output the Mirrorstone 4w MR16 LED spotlights are a perfect replacement for your low voltage 40w halogen spotlights.

As with all MR16 LEDs you can swap these over with your halogen ones and make savings straight away.

Please note that when changing your MR16 spotlights to LED there is a chance that the lights will flash. This only occurs if the transformers installed aren't Constant Voltage although this is only the case around 10% of the time.

On top the savings made on running costs, you can extend the savings out with our 5% bulk buy discount offer for when you buy 10 or more. Like all of our MR16 LEDs, this bulk buy discount can be increased further by the range of special discount codes that are ran consistently. These two combined mean you can make savings of up to 25% before your order has even left our warehouse!

Introducing ProNXT

The ProNXT generation of LED spotlights has been finely tuned to squeeze every last drop of performance out of them. The lumens-to-watts ratio has been greatly improved, with a brighter light for less energy usage. The heat sink has been tightened, with pristine materials used, to disperse heat better. This lengthens the lifespan of the bulb massively.

Seamless Low Voltage LED Replacements

It features 3 super power LEDs. As they are manufactured so close to one another, they deliver a 45° beam angle that helps replicate a 40w low voltage halogen spotlights brilliantly.

This low voltage spotlight is available in both Warm White (3000K) and Cool White (6000K) making it suitable in a wide range of installations.

Warm White is mainly used in a range of living areas like living rooms and dining rooms because of the similarities it bares with traditional incandescent light bulbs. On top of this, Warm White is also used widely in bedrooms and hallways as well as rooms that have a more traditional style to them.

Alternatively, Cool White is used rooms that need a clearer, bright light such as bathrooms and kitchens. It is also advised for use in rooms that have a more modern feel to them.

If you are still unsure on the colour that you would like then read our colour guide to try and get a better idea on what you want to install.

Dim The Lights More Efficiently Than Ever

Being low voltage, our full range of LED MR16s are available as dimmable. The dimmability of these products is dependent on the transformer and whether it is dimmable. We have a range of dimmable LED drivers to use with a wide range of low voltage LED Lighting. You will also need a trailing edge LED compatible dimmer to dim them.

Important information regarding dimmable LED bulbs and spotlights

Leading 5 Year Warranty, Returns Period And Huge Lifespan

As standard, our full range of Mirrorstone Lighting products come with a 2 year manufacturer's warranty as standard after your purchase. This warranty can then be extended by 3 years to a 5 year warranty at no extra cost! This extendable warranty is applicable to full LED spotlights, LED light bulbs and LED tape ranges.

These spotlights also have an estimated lifespan of up to 15 years meaning that savings of up to 90% can be made for up to 15 years. If you use them for 4 hours a day you can expect a lifespan of nearly 30 years!

Watch the video below to learn the differences between MR16s and GU10s:

If you have any questions about our range of MR16 LEDs, applicable discount codes, wholesale rates or have any trade enquiries then feel free to contact us by or by telephone on 0116 321 4120.