Sylvania ToLEDo Retro Edison E27 ST64 4W Gold | Replaces 35W
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Specifications Sylvania ToLEDo Retro Edison E27 ST64 4W Gold | Replaces 35W
By purchasing the quantity recommended, your products will come as packaged by the manufacturer.
|Any Lamp all-in warranty||1 Year|
|Energy efficiency class||A++||
The European Union has drawn up guidelines for energy labels for lighting. The energy efficiency of lamps and luminaires is expressed in classes (A to G). Energy label A is the most efficient and energy label G the least. The energy label is also stated on the packaging of a product.
|Average Lifetime (h)||15000|
|Cap / Base||E27 (Edison screw)||
The cap/base of a bulb is the part that connects it to the socket in the fixture. In Ireland, B22 (Bayonet) caps/bases are still the most popular, although E27 (Edison screw) caps/bases are becoming increasingly popular. GU10 is the most common cap/base for spotlights. Check which cap/base you need carefully as many other types are also available.
|Colour temperature (Kelvin)||2500K - Extra Warm White||
The colour temperature refers to the colour produced by a light. It's measured in Kelvin (K) and ranges from warm white (1700K - 3000K) to daylight white (6500K). Neutral white (3100K - 5000K) is mainly used for general lighting applications.
|Colour Code||824 - Extra Warm White||
The colour code is a combination of the colour rendering index (CRI) and the colour temperature (K). The first number refers to the CRI (1 = very poor colour rendering, 9 = maximum accuracy). The second and third numbers refer to the colour temperature. For example, a light with a colour code of 830 has very good colour rendering and produces a warm white light.
|Colour Rendering (Ra)||80-89||
The colour rendering index (CRI) indicates how accurately colours are represented under a beam of light. The index goes from 1 to 99, with a CRI of 1 being the poorest and a CRI of 99 being the best possible. Be careful not to confuse colour rendering with colour temperature (K).
|Light Output (Lumen)||420||
Lumen (lm) is the term used to describe the total amount of visible light emitted by a light source. The higher the number of lumens, the brighter it is.
|Luminous Efficacy (Lm/W)||100|
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