E14 (SES) LED R39 Reflector Bulb 4.5W 320lm - Warm White 3000K

This is a small LED reflector bulb with an E14 cap, the small screw fitting usually written as SES. The R39 code names the shape: a 39mm reflector face on a short tapered body, with the bowl behind the diode throwing light forward instead of letting it spill sideways. It draws 4.5W and gives 320 lumens at 3,000K, a warm white close in tone to an old incandescent bulb. The Eveready pack rates that output as the equal of a 30W filament bulb and prints a life of 10 years or 10,000 hours, with more than 10,000 on and off switching cycles.

An R39 belongs in the compact fittings built around it: small spotlight bars, plinth and cabinet lights, display and picture fittings that take a small screw cap. Check the old bulb before you order, because E14 is the narrower of the two common screw caps and will not thread into an E27 holder. Where a fitting is tight, the 39mm face also helps: it is the smallest of the usual reflector sizes, so it goes in where an R50 or R63 will not. Warm white at 3,000K keeps a room looking relaxed rather than clinical, which makes it a sensible choice for living rooms, hallways and shelf lighting.

This one is not dimmable, so put it on a plain switch; a non-dimmable LED on a dimmer circuit can flicker or fail early. The pack prints a 120 degree beam, so you get a soft pool of light rather than a tight spot. It runs on 220-240V at 50/60Hz, which is standard UK mains, and it is mercury free. The energy label rates it class G. Each unit is a single bulb and the minimum order is five, sold in multiples of five. It sits alongside our wider Eveready range of LED candle, golf and GLS bulbs in B15, B22 and E27 caps.

Which fitting does this bulb screw into?

It takes an E14 small screw cap, often written as SES. Twist the old bulb out and compare the thread: E14 is noticeably narrower than the E27 used in most table lamps.

How bright is 320 lumens in practice?

The pack rates it as the equal of a 30W filament reflector, so it suits accent, display and cabinet fittings rather than lighting a whole room on its own.

Can I use it on a dimmer switch?

No. The specification lists it as non-dimmable, so it belongs on an ordinary on and off switch. A dimmer circuit can make a non-dimmable LED flicker or shorten its life.

What does the R39 code mean?

R is for reflector and 39 is the diameter of the face in millimetres, so the bowl measures 39mm across. R50 and R63 are the larger versions of the same shape.

What colour is the light, and how does it render colour?

It is 3,000K warm white, and the pack prints a colour rendering index above 80. That gives a soft, slightly yellow light that keeps wood, paint and fabric looking natural.

How many bulbs will I receive?

One unit is a single bulb in its own box. The minimum order is five units, sold in multiples of five, so the smallest order you can place is five bulbs.