E14 Reflector 4W LED Bulb R39 - Warm White

This E14 LED bulb takes the compact R39 reflector shape, throwing a directional 120 degree cone of light rather than spreading it in every direction. It draws just 4 W while putting out 320 lumens, replacing an old 29 W reflector lamp at a fraction of the running cost. The fitting is an E14 Small Edison Screw, known in the US as a candelabra cap, so it twists into the same small screw holders used across spotlight clusters and accent fittings. The tone is a warm white 3000K, the soft yellowish light that suits relaxed and decorative settings.

Because the beam is contained to 120 degrees, this lamp is best where light needs to be aimed rather than washed across a whole room. It works well in spotlight bars and track-style cluster fittings picking out a shelf, a picture or a worktop edge, and in display cabinets or small accent fittings around a living space. The R39 envelope is small at Ø39 by 68 mm, so it slips into shallow and recessed holders where a larger lamp would not sit. With a CRI of Ra 80 colours read naturally enough for general accent and display use. This is an indoor lamp on an IP20 rating, so keep it clear of bathrooms, porches and any outdoor or damp position.

The bulb has a tidy white finish and a glass-fronted reflector that bounces light forward through the lens. It runs on 220 to 240 V AC mains straight from the E14 holder with no transformer needed, and it is a non-dimmable lamp, so pair it with a standard on/off switch rather than a dimmer circuit. Rated for around 15,000 hours and weighing only 24 g, it is a straightforward swap for tired halogen and incandescent reflectors. We stock this R39 in matching options across the E14 reflector range so a full fitting can be lamped to the same tone.

Product Specification Sheet

Range Datasheet

Which fitting does this bulb need?

It uses an E14 cap, also called Small Edison Screw or SES, the smaller of the two common screw fittings. In the US this is the candelabra base. It twists into any E14 holder and does not need an adaptor.

What old bulb does the 4W replace?

At 4 W the LED gives the light output of an old 29 W reflector lamp while using far less power. It produces 320 lumens, so it is a like-for-like brightness swap for a tired halogen or incandescent R39 reflector.

Can this bulb be dimmed?

No, this is a non-dimmable lamp. It should be used on a standard on/off switch rather than a dimmer circuit, as fitting it to a dimmer can cause flicker or shorten its life.

What does the 120 degree beam suit?

The 120 degree beam is fairly wide for a reflector, giving a directional cone of warm 3000K light. That makes it well suited to spotlight bars, track clusters and display fittings where you want light aimed at a surface or object rather than spread across the room.