4W Edison Vintage LED Bulb E27 in Ultra Warm is backordered and will ship as soon as it is back in stock.
Where It Belongs
Every Purchase Restores Sight
See the Difference CRI Makes
Standard CRI 80+Dull, washed-out light
Reds lose their warmth. Skin looks pallid. Artwork loses depth. The room feels lifeless regardless of how many bulbs you use.
Dulora CRI 90+Noticeably better light
Colours come back to life. Reds stay warm, skin tones look natural, and surfaces take on the depth and texture they were always meant to have. A significant step above what most homes and venues settle for.


Product Features
Description
Description
A squirrel-cage filament glowing behind amber glass, with a more intricate crossed pattern that brings extra visual depth to the Edison silhouette. The dimmable 4W Edison Vintage LED Bulb delivers 280 lumens of 2000K ultra warm light, replacing a traditional 25W incandescent with ultra-high colour accuracy. Backed by a 3-year warranty.
The Amber Effect
The squirrel-cage filament packs more visible detail into the globe than a simple spiral, with crossed filament strands catching light from more angles. Combined with amber-tinted glass, it produces a deeper, more textured gold than a plain clear finish would allow, especially once the light catches the crossed strands from the side rather than straight on, giving the globe a slightly different sparkle depending on the angle it's viewed from.
Switched off, the intricate filament pattern gives the bulb a collectible look, which matters in fittings built around a handful of visible bulbs rather than dozens. It's compatible with standard trailing-edge dimmers and holds a smooth, flicker-free dim curve, so the filament detail stays steady rather than stuttering as brightness drops.
Where It Belongs
Best suited to feature pendants, single-bulb wall sconces, and statement table lamps where the filament detail can actually be seen. In hospitality, it fits speakeasy-styles bars, boutique hotel rooms, and vintage-themed restaurants building a design story around exposed, characterful bulbs, as well as retail window displays where the filament pattern itself is part of the visual merchandising, or a reading chair built around one striking bulb rather than a shade. The E27 fits standard Edison screw sockets found in most pendant and lamp fittings.
Specifications
Specifications
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SKUF427-ST64V-A-20K
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Bulb Base Type
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Bulb Shape
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Input Voltage
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Wattage
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Brightness
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Colour Temperature2000 Kelvin
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CRI
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Dimmable
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Eye Comfort
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Incandescent Equivalent
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Glass Finish
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Bulb Diameter
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Total Length
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Average Life
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Beam Angle
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Material
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Manufacturer's Warranty
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Certification's
Frequently Asked Questions
Frequently Asked Questions
How bright are Dulora bulbs?
LED brightness is measured in lumens, not watts. Here's a quick conversion guide:
- 2-3W LED ≈ 25W incandescent (200-300 lumens)
- 4-5W LED ≈ 40W incandescent (400-500 lumens)
- 6-8W LED ≈ 60W incandescent (650-800 lumens)
- 7.5-10W LED ≈ 75-100W incandescent (900-1200 lumens)
- 11-12W LED ≈ 100-125W incandescent (1300-1500 lumens)
All Dulora product pages list wattage and lumen output so you can choose the perfect brightness for your needs.
What is the lifespan of Dulora bulbs?
Dulora bulbs are designed for over 25,000 hours of use. If you use your light for an average of 3 hours per day, your LED bulb could last over 22 years. This exceptional longevity significantly reduces the frequency of replacements compared to traditional incandescent bulbs, which typically last only 1,000-2,000 hours. Note that all LED bulbs' light output gradually decreases over time, a phenomenon known as lumen depreciation.
Are Dulora bulbs dimmable?
Yes, most Dulora bulbs are dimmable, allowing you to create the perfect ambience for any occasion. Look for the "dimmable" specification on the product page. For optimal performance, we recommend using LED-compatible dimmers. Some older dimmer switches may cause flickering or buzzing with LED bulbs. If you experience any issues, please contact our customer support team for assistance.
What is colour temperature, and which should I choose?
Colour temperature refers to the warmth or coolness of light, measured in Kelvins (K):
- Ultra & Extra Warm (2000K-2200K): This calming light creates a relaxing ambiance, similar to the warm glow of candlelight.
- This calming light gives off a warm glow, similar to candlelight. However, because it is such a soft light, it may not be suitable for activities that require focus, such as reading.
- Warm White (2700K-3000K): This colour creates a cozy, inviting atmosphere similar to traditional incandescent bulbs. It is ideal for living rooms, bedrooms, and dining areas.
- Natural White (3500K-4000K): Provides a balanced, neutral light perfect for kitchens, offices, and workspaces.
- Cool White (5000K-6500K): This colour delivers a crisp, energising light similar to daylight. It is best for task lighting, garages, and areas requiring detailed visibility.
Choose based on the mood you want to create and the purpose of the space.
Are Dulora bulbs compatible with my existing fixtures?
Dulora offer bulbs in all standard base types, ensuring compatibility with most fixtures. Common bases include:
- E27/ES: Standard Edison Screw, the most common base type (27mm diameter)
- B22/BC: Bayonet Cap, standard in many regions (22mm diameter)
- E14/SES: Small Edison Screw, used in chandeliers and smaller fixtures (14mm diameter)
- B15/SBC: Small Bayonet Cap, used in smaller fixtures (15mm diameter)
- E12/SES: Mini Edison Screw, used for chandeliers and small fixtures from the US (12mm diameter)
Check your existing bulb's base type and match it with the corresponding Dulora product. If unsure, take a photo of your current bulb base and contact our customer service team for assistance.
Can Dulora bulbs be used in enclosed fixtures?
Some Dulora bulbs can be used in enclosed fixtures, but not all. Look for the "enclosed fixture compatible" specification on the product page. Enclosed fixtures trap heat, which can shorten LED lifespan if the bulb isn't designed for such applications. Our enclosed fixture-compatible bulbs feature enhanced heat dissipation technology to maintain performance and longevity even in enclosed environments. For fixtures without proper ventilation, we recommend choosing bulbs specifically rated for enclosed use.
What is the difference between clear, frost, opal, and porcelain LED bulbs?
- Clear LED bulbs have a transparent glass covering that showcases the filament inside, creating a decorative, vintage appearance. They produce more directional light and create beautiful shadow patterns.
- Frost, opal, and porcelain LED bulbs diffuse light, reducing glare and distributing illumination evenly. These bulbs are ideal for ambient lighting and minimising shadows when fabric or glass shades are used. Frosted bulbs allow good light transmission but with slightly visible LED filaments. Opal and porcelain bulbs provide uniform light diffusion and better LED concealment. Opal bulbs have a shiny finish, while porcelain bulbs have a matte finish.
Choose clear bulbs for decorative fixtures where the bulb is visible and frosted, opal or porcelain bulbs for everyday lighting where comfort and light distribution are priorities.
How much energy do Dulora bulbs save compared to traditional bulbs?
Dulora bulbs use up to 90% less energy than traditional incandescent bulbs while providing the same brightness level. For example, a 6.5W GLS LED bulb produces the same light as a 60W incandescent bulb. This significant energy reduction translates to lower electricity bills and a smaller carbon footprint. Over the bulb's lifetime, you can save hundreds of dollars in energy costs per bulb.
What is your warranty policy?
Dulora bulbs come with a comprehensive warranty against manufacturing defects. Most of our products carry a 2-year warranty, while premium lines may offer extended 3 to 5-year coverage. If your product fails during the warranty period under regular use, we'll replace it free of charge. Simply contact our customer service team with your order number and a description of the issue. Our no-quibble guarantee ensures a hassle-free experience if you encounter any problems.
Still have a question?
Payment & Security
Payment methods
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