DimmableYes
eye comfortFlicker-free
replaces25W
colour accuracyHigh CRI 90+
light mood2000K
BUILT TO LAST25,000 hours4W Medium Tube Spiral LED Bulb E27 in Ultra Warm is backordered and will ship as soon as it is back in stock.
Standard CRI 80+Reds lose their warmth. Skin looks pallid. Artwork loses depth. The room feels lifeless regardless of how many bulbs you use.
Dulora CRI 90+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
Adjust the brightness to create the perfect mood – from cosy evenings to bright, functional light.
Gentle on the eyes – no strain, fatigue, or headaches.
Delivers the same light output as a 25W incandescent with a fraction of the energy use.
High colour accuracy – enhances tones for richer, more natural appearance.
Golden, firelight-style ambience – perfect for restaurants, bars, and mood lighting.
A coiled filament running the full length of a medium amber glass tube, throwing 250 lumens of 2000K ultra warm light through an E27 fitting with a visual rhythm all of its own. The dimmable 4W Medium Tube Spiral LED Bulb replaces a traditional 25W incandescent with ultra-high colour accuracy and the kind of warm amber glow that suits a run of matching fittings as naturally as it suits a single feature one. Backed by a 3-year warranty.
The Amber Effect
The coiled filament traces a clean, unbroken path along the tube's length, lit to a warm amber gold through the tinted glass. The amber deepens the colour temperature beyond 2000K, pushing the light toward a candlelit warmth, and the coil's continuous spiral creates a visual pattern that's distinct from the single-line filament of the vintage version. Switched off, the spiral remains clearly visible through the glass: a deliberate, intricate centrepiece in any open fitting. It dims smoothly on a trailing-edge dimmer, staying evenly lit along the coil's full length even at the lowest settings.
Where It Belongs
Multi-bulb pendant clusters, chandelier arms, and café-styles runs of matching fittings where the spiral coil creates a consistent visual across several identical bulbs. Restaurant ambient lighting schemes, boutique hotel corridors, and bar-styles pendant runs wanting visual uniformity across multiple fittings are natural hospitality settings. At home, dining rooms and living rooms running two or three matching pendants above a table or kitchen island benefit from the consistent spiral pattern that a single-line filament wouldn't replicate as cleanly. The E27 fits the standard Edison screw socket used in most pendant and lamp fittings.
LED brightness is measured in lumens, not watts. Here's a quick conversion guide:
All Dulora product pages list wattage and lumen output so you can choose the perfect brightness for your needs.
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.
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.
Colour temperature refers to the warmth or coolness of light, measured in Kelvins (K):
Choose based on the mood you want to create and the purpose of the space.
Dulora offer bulbs in all standard base types, ensuring compatibility with most fixtures. Common bases include:
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.
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.
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.
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.
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.
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