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The LED Authority

Lighting Science 6 Watt, DIMMABLE LED MR16 Lamp with GU10 Base

SKU: DFN-16-CW-FL-GU10 | Ordering Code: DFN-16-CW-FL-GU10

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Product Highlights

  • Estimated life of 27.4 years based on 3 hours use per day
  • No lead or mercury means easy and environmentally safe disposal

Lighting Facts Per Bulb

Brightness 365 lumens
Estimated Yearly Energy Cost $0.72
Based on 3 hrs/day, 11¢/kWh
Cost depends on rates and use
Based on 3 hrs/day27.4 years
Light Appearance
5000 K
Energy Used6 watts

Lighting Science Group 6 Watt dimmable lamp generates as much light as many 20 Watt halogen MR16 with GU10 Base lamps.

  • Perfect to use anywhere you are using a 20 Watt MR16 medium base halogen lamp

  • No lead or mercury means easy and environmentally safe disposal

  • 365 Lumens initial light output is comparable to most 20 Watt halogen lamps, while saving 14 Watts in electricity

  • VERY long life - rated to still put out 70% as much light after 30,000 hours of operation as it does when brand new

  • Energy Star approved

Also, NOT RECOMMENDED for use in enclosed fixtures because heat buildup can shorten life.. DO NOT "hot swap" this lamp.  Turn off fixture before replacing existing bulb.

Full Specs


Lighting Science

Energy Used

A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
Energy Used
6 Watts


A measure of "electrical pressure" between two points. The voltage specification of an incandescent lamp is the electrical "pressure" required to drive it at its designed point. The "voltage" of a ballast (e.g. 120 V) refers to the line voltage coming from the power source and is connected to the ballast.


The end (or ends) of the lamp that fits into the socket.

Bulb Shape

The description of the general appearance of a lamp/bulb consists of a letter(s) followed by a number. The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. For example, a common household bulb is the A-19. The bulb is "A" shape and the diameter would be nineteen 8ths of an inch, or 2 3/8".
Bulb Shape

Bulb Color

The color of the light produced by a bulb
Bulb Color
Cool White


Color Rendering Index is an international system used to rate a lamp's ability to render object colors. The higher the CRI (based upon a 0-100 scale) the richer and more accurately colors generally appear. CRI differences among lamps are not usually visible to the eye unless the difference is more than 3-5 points.

Color Temperature (Kelvin)

An expression of the hue of the light emitted, measured in degrees Kelvin. Usually expressed by a four digit number followed by (k), such as 2700k. Higher temperatures indicate whiter, "cooler" colors, while lower temperatures indicate yellower, "warmer" colors. Some common Kelvin temperature benchmarks are 2700k (warm white), 3500k (neutral white), 4100k (cool white), 5000k (bright white), and 6500k (daylight).
Color Temperature (Kelvin)

Brightness (Lumens)

A rating of the initial light output of a bulb, rated after 100 hrs of operation. Lumens are a measure of how much light falls on one square foot of area, one foot away from the light source.
Brightness (Lumens)

Bulb Technology

The technology implemented by the bulb, e.g. incandescent, halogen, LED
Bulb Technology

Average Rated Life (hr)

A measurement of the average length of time, between first use and the point when 50% of the lamps tested have stopped functioning, , using an operating cycle of 3 hours on, 20 minutes off.
Average Rated Life (hr)

Operating Temperature (°F)

The ambient temperature in which the product can safely operate.
Operating Temperature (°F)
-4 to 104

Beam Angle (°)

The width of a light beam, expressed in degrees. The beam angle is often part of the ordering code for reflector lamps. For example, a 50PAR30/HIR/NFL25 is a 50-watt PAR30 narrow flood lamp with a beam angle of 25 degrees.
Beam Angle (°)

Length (in)

Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Length (in)

Diameter (in)

Light bulbs: a measurement of a bulb's width taken at the widest point of the bulb. Fixtures: the measurement across the widest point of a circular fixture.
Diameter (in)


3 years limited


Indicates whether a bulb can be dimmed in conjunction with a suitable dimmer control.
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