Tronic Filament LED 4W B22 Red Bulb

Our review

This is a 4 watt LED filament bulb from Tronic, finished in red and fitted with a B22 pin base. Instead of a standard opaque diffuser, it uses chip-on-glass construction: a series of small LEDs mounted on a transparent substrate, which the maker describes as sapphire or glass. That transparency is the point, since it lets the light spread evenly rather than pooling in one spot. It suits anyone after a coloured accent rather than general illumination, such as a decorative fitting, a sign, or a shaded lamp where a red glow is wanted. Before buying, confirm your socket is genuinely B22 pin and not bayonet-cap or screw, and check the fitting can take a bulb of this shape. Since no other specifications are listed, compare on base type, colour and wattage against other decorative LED bulbs, and treat the 4W figure as the only guide to brightness available here. It is available on Sokonia.