SpectrumLED

LED Bulb Spectrum Golf Ball E27 5.5 W 660 lm 2700 K COG Filament Clear

Name: LED Bulb Spectrum Golf Ball E27 5.5 W 660 lm 2700 K COG Filament Clear
Brand: SpectrumLED

Kulka is an LED bulb in a clear glass globe 45 mm across, with four straight COG filaments visible inside. The cap is an E27 screw and the whole lamp measures 72 mm long. How much light it gives and what it replaces The lamp delivers 660 lm from 5.5 W. The manufacturer declares it the equivalent of a 53 W incandescent, so this is brightness for a single wall light, a bedside lamp or one of several points in a chandelier, rather than for lighting a room on its own. The 2700 K colour is warm and slightly yellow — the tone of the old incandescent bulb. A colour rendering index of Ra 80 is enough in a living room, a bedroom or a hallway; at a mirror or over a worktop, where colours have to match, a source with a higher Ra is the better choice. A 300° beam means the globe radiates almost all round and is shaded only towards the cap, so the filaments are visible from every side — in a fitting with an exposed socket that is part of how the lamp looks. What it consumes and how long it lasts Luminous efficacy is 120 lm/W, and the energy label states class E and a consumption of 6 kWh per 1000 hours of use. At three hours a day that comes to a little over 6 kWh a year per lamp. The manufacturer declares 17,000 hours of operation and 15,000 switching cycles. The second figure matters where a light goes on and off dozens of times a day — in an entrance hall, a bathroom or a pantry it wears out faster than the hours alone suggest. The warranty is 2 years. Where it fits The 45 × 72 mm size is the figure to compare with the shade opening and the depth of the fitting — the globe is clearly smaller than a classic GLS bulb and goes in where that one no longer does. Supply is 230 V, 50 Hz, drawing 36 mA. The lamp is not dimmable: on a dimmer circuit it will flicker or not light at all, so a different source is needed for adjustable lighting. The operating range is −20 to +40 °C, and the manufacturer intends it for indoor use only.Show more

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