8W Dimmable LED Filament Bulb ST64 - Amber Glass E27 3000K

This 8W LED filament bulb combines an amber-tinted ST64 glass envelope with visible LED filament strands arranged to mimic the look of traditional Edison carbon filament bulbs. The E27 screw base fits standard UK light fittings, and the bulb outputs 800 lumens at 3000K, producing warm white light with a vintage amber glow from the tinted glass.

Designed for decorative use in pendant lights, table lamps, wall lights and chandeliers where the bulb is visible, the amber glass softens the brightness while the exposed filament provides visual interest whether the bulb is on or off. The dimmable LED driver inside the bulb works with most standard UK trailing-edge and leading-edge dimmer switches, allowing light levels to be reduced from full 800 lumens down to a low ambient glow. Dimmer compatibility should be checked against the specific dimmer model before installation.

The ST64 shape (also called ST19 in imperial sizing) refers to the squirrel cage or teardrop profile, with a 64mm diameter at the widest point and 140mm overall height including the E27 base. This makes it larger than a standard A60 household bulb, giving it more presence in open-shade fittings or cage pendants. The 8W power draw replaces approximately 60W of incandescent output, and the LED construction gives a rated lifespan of 15,000-25,000 hours depending on usage and dimming frequency.

Is this bulb compatible with dimmer switches?

Yes, the bulb is rated as dimmable and works with most standard UK trailing-edge and leading-edge dimmer switches. Compatibility varies by dimmer model, so if you experience flickering or a narrow dimming range, the dimmer may need to be updated to an LED-compatible type.

What colour is the light when switched on?

The LED filament produces 3000K warm white light, which appears as a soft yellow-white tone similar to traditional incandescent bulbs. The amber-tinted glass adds an additional warm cast, giving the overall output a golden glow that suits ambient and decorative lighting rather than task lighting.

What fixtures is this bulb suited to?

The ST64 shape works best in fittings where the bulb is visible and part of the design: pendant lights with open shades, table lamps with clear glass bases, wall lights, industrial cage lights, and chandeliers. The larger 64mm diameter and exposed filament make it a feature bulb rather than a hidden-source bulb.

How does the 8W output compare to old incandescent bulbs?

The 8W LED produces approximately 800 lumens, which is equivalent to a 60W traditional incandescent bulb. The amber glass reduces perceived brightness slightly compared to a clear LED bulb of the same lumen rating, making it better suited to ambient lighting than task lighting.