SUPERWARM™ 1700K Flicker-Free A19 10W LED Bulb
SUPERWARM™ 1700K Flicker-Free A19 10W LED Bulb
SUPERWARM™ 1700K Flicker-Free A19 10W LED Bulb
SUPERWARM™ 1700K Flicker-Free A19 10W LED Bulb
SUPERWARM™ 1700K Flicker-Free A19 10W LED Bulb

SUPERWARM™ 1700K Flicker-Free A19 10W LED Bulb

4005.17  - In Stock

Regular price $18.00 Sale

  • New product! (July 2021)
  • Extremely low color temperature of 1700K
  • Blue-free light output for reduced circadian cycle impact
  • Completely flicker-free light output (Learn More)
  • 83 CRI light quality (Learn More)
  • Compatible with global voltage input (AC90-240V/50-60Hz)
  • Conveniently screws into any standard E26 or E27 Edison socket
  • 10 Watt power consumption
  • 600 lumens - equivalent to a 50W incandescent bulb
  • Not dimmable, not suitable for enclosed fixtures
  • 25,000 hours lifetime, 3 year warranty

Notice: This item cannot ship to California. (Why not?)

  • Product Overview

    Waveform Lighting has once again pushed the envelope with SUPERWARM™ - a new spectral formulation which features an ultra-warm color temperature rating of 1700K. By going all-in with RedBoost™ phosphor technology, the result is a very soft, warm glow that is reminiscent of candlelight or a deep, fiery-red sunset.

    The 1700K SUPERWARM™ spectrum features very low blue wavelength energy output, making this a perfect bulb for nighttime use where there may be circadian cycle concerns. In fact, based on melanopic sensitivity modelling, this bulb is 60% less impactful on circadian rhythms (M/P ratio of 0.274).

    We also designed this bulb with a respectable 84 CRI rating, which allows for good visual clarity, and makes it a perfect option for bed-time reading and romantic mood lighting.



  • Product Specifications

    Specifications Overview
    Color 1700K
    CRI (Ra) 83
    CRI R9 15+
    M/P Ratio 0.274
    Brightness 600 lumens (50W equiv)
    Voltage AC90-240V, 50-60 Hz
    Power 10 watts
    Installation E26 or E27 (Medium Edison Screw)
    Specification sheet download   Specification Sheet 
    Specification sheet download   Photometric Report
  • Installation

    This product is a standard A19 LED screw-in lamp designed to work in virtually all lamp fixtures, including those designed for traditional incandescent or CFL lamps.

    The lamp has an industry-standard E26 base, which is the ubiquitous, approximately 1-inch wide, screw-base.

    The lamp emits the equivalent brightness of a 50 watt incandescent bulb, but only consumes 10 watts. You may find that your lamp fixture has a warning regarding the maximum wattage permitted per socket. Use the 10 watt value, and not the 50 watt equivalency value, in confirming compatibility.

  • Pricing & Ordering Information

    Listed pricing is per one bulb (1-pack) or six bulbs (6-pack). Please see below for part numbers and corresponding specifications.

    Part Number Specification
    PN 4005.17 1700K
  • Shipping & Returns

    This item is in stock and typically ships within 1-3 business days. Shipping is free within the USA.

    If you're not 100% satisfied with the performance, color or quality of your product, we'll work with you to make it right.

    Simply contact us within 30 calendar days after delivery and we'll pay for return shipping (USA only) and offer you a full refund.

    See our delivery policy, returns & refunds policy and warranty policy.

Ultra-Low Circadian Impact


Our SUPERWARM™ LED bulbs feature a very low color temperature of 1700K. With an M/P ratio of 0.274 that is even lower than candlelight, these bulbs are an excellent option for use during evening hours where light exposure is most likely to affect sleep patterns.


Ultra-Low Circadian Impact


Our SUPERWARM™ LED bulbs feature a very low color temperature of 1700K. With an M/P ratio of 0.274 that is even lower than candlelight, these bulbs are an excellent option for use during evening hours where light exposure is most likely to affect sleep patterns.


Flicker-Free & Healthy


Some LED lights will produce rapid flicker or pulses that aren't immediately visible to the naked eye, which can cause headaches, nausea and eye strain. Our SUPERWARM™ LED bulbs extend the same flicker-free technology used in our CENTRIC SERIES™ lamps, and include additional electrical circuitry to achieve a truly flicker-free light output that produces a comfortable and stable light level. Learn more about flicker here, or watch our video demonstration below.

  • Frequently Asked Questions

    • What is 1700K like?

      The 1700K color temperature is a unique color point which exhibits a fiery, red glow. The color is similar to the red glow of a match flame, or an incandescent bulb dimmed down to 5%.

      A typical incandescent bulb at full brightness has a color temperature of 2700K, while a candle flame has a color temperature of 1900K. As its name suggests, SUPERWARM™ LED lamps have an extremely warm color temperature!

      By lowering the color temperature to such a low level, we are able to reduce the blue light content at a spectral level.

      Not sure if you'll like it? Take advantage of our 30 day free-returns policy to try out the different colors. If you don't like it, simply let us know and we'll send over a return label.

    • How is this different from an amber or red LED bulb?

      Bulbs marketed as "amber" and "red" will almost always use a monochromatic LED, which emits light in a very narrow bandwidth that only contains amber or red wavelengths. As a result, all objects will appear amber or red, with no ability to distinguish objects' colors. In fact, most monochromatic LED sources have a CRI rating near 0.

      Our SUPERWARM™ bulbs, on the other hand, utilize a multi-phosphor broad spectrum approach. Although the color may appear to be a deep orange or reddish color, the spectrum still contains a wide range of wavelengths, including yellows, greens and even a tiny amount of cyan and blue wavelengths. As a result, these lamps are able to emit a low-blue light spectrum, without compromising on color accuracy as evidenced by the 83 CRI rating.

    • How much blue light does this bulb emit?

      Our objective in developing the SUPERWARM™ LED spectrum was to limit blue light output as much as possible, while balancing the need for color accuracy. We chose to include a very small amount of blue wavelength energy in order to provide the necessary spectral breadth for color acuity.

      The amount of blue light that this bulb contains is miniscule - far less than traditional "circadian safe" light sources such as incandescent bulbs and even candles. The M/P ratio for this bulb is 0.274, compared to 0.5 and 0.3 for incandescent bulbs and candlelight, respectively.

      For a truly blue-free light source, we would recommend a monochromatic amber or red LED solution (as mentioned above). The downside, of course, is that you will end up losing the ability to distinguish colors, as all objects will take on a pure amber or red shade.

    • How many bulbs should I install in my space?

      For such a low color temperature bulb, an illuminance level of 0.5 footcandle (5 lux) is generally sufficient. As such, one bulb will cover approximately 130 square feet of space. Simply divide the square footage of your space by 130 to get the number of bulbs needed. For example, a 260 square foot area would be calculated as 260 divided by 130, which equals 2 bulbs.

    • Are these bulbs dimmable?

      Unfortunately, these bulbs are not dimmable. This means that they cannot be used on any electrical circuit which has a dimmer installed, even if you keep the dimmer at the maximum setting at all times.

    • Do these bulbs emit any UV radiation?

      These bulbs do not emit any ultraviolet radiation. The light output covers the entire visible spectrum between 420 nanometers and 800 nanometers, but does not go below (UV-A) or above (infrared).

    • What kind of lamp fixture can this product be used in?

      These A19 bulbs have a standard screw-in base (E26 / E27), which is the same type that has been used for more than a century.

      As long as the lamp fixture is designated for an A type or A19 type, these bulbs will be compatible.

      Although these lamps have the brightness of 50 watt incandescent lamps, these lamps have an actual power draw of only 10 watts. Therefore, they can safely be used in fixtures that have a max rating of less than 50 watts.

    • What is the voltage range of these lamps? Can they be used overseas?


      The voltage range of this product is AC 90-240V and 50-60 Hz, which covers all global voltages. As such, they can safely be used internationally without any issues. The internal circuitry adjusts for the input voltage automatically, and does not affect the light output or performance of the lamp.

Customer Reviews

Based on 3 reviews
Early Morning Sun Peeking through the Clouds

How do you feel when the Sun starts to peek through the clouds soon after dawn? I live in Seattle, and for the next seven months, I don't know how many times I will see something like that. But I have felt a sense of joy while viewing the light that these bulbs emit. Their "Lighting Parameter Analysis Report" gives these bulbs an R9 rating of 97, which I suspect I've missed lately.

Eugene M
Great bulbs

I have a “condition” where my eyes can pick up flickering and overtime, being around those led flickering lights, my eyes “flicker” (getting brighter and darker) even outside in a bright day. You can tell by looking at a bright object outside like the sky or clouds (don’t wear sunglasses for this test).
Waveform flicker free lightbulbs are great. They don’t flicker and the added benefit of the new 1700K temperature is a bonus. I love warm lights and these are the warmest you can get.
One request to Waveform is to please make these in a lower luminosity.
Thanks for the great product. I am a life long customer fro point on.

Cozy, golden light

This light is golden with a touch of rose. When the light is nearby and not blocked too much by a shade, it’s bright enough to read by, but seems dimmer than a typical 2700K bulb. I think this light would work in a nursery, dining room, bedroom, or as a reading light. It’s definitely a special light, not for general usage, but I really love this light and am imagining more places I might put these bulbs. It makes me feel comfortable and happy. And most importantly, it’s safe -there’s absolutely no invisible flicker, so it doesn’t trigger the headaches, memory problems, disorientation, nausea, and sleep problems that I get from LEDs with invisible flicker. For me, flicker-free light is necessary so I don’t have early-morning awakenings (for weeks after invisible flicker exposure) and this and any of the other completely flicker-free Waveform LEDs do the job. The very low blue light doesn’t matter for me, but might for others. I just like the warm appearance of the light. Well done, Waveform!