Wiyifada a19 LED Black Light Bulbs, 4-Pack, Dimmable, 385–400 nm UVA

For a Halloween display, screw these Wiyifada A19 black light bulbs into compatible fixtures to make reactive paints and glow-in-the-dark decorations stand out under UVA light. The four-pack provides several bulbs for one room or multiple indoor setups, and the dimmable design gives you some control over the effect when used with a compatible dimmer.

Their stated UVA range is 385–400 nm, and the base is E26. These are specialty black lights for creating an atmospheric fluorescent effect, rather than general-purpose bulbs for everyday room lighting.

Key specifications

• Type: LED black light bulbs
• Shape: A19
• Pack size: 4 bulbs
• UVA wavelength: 385–400 nm
• Base: E26
• Voltage: 120 volts
• Dimmable: Yes
• Listed use: Indoor

The product details identify the model as a19 and describe the bulbs as dimmable. The input lists power inconsistently as 9 watts in the product name and manufacturer information, and 10 watts in other specifications, so the wattage is best confirmed against the packaging for the exact set. A claimed 20,000-hour operating life is also listed, but buyer feedback is mixed on how long the bulbs last.

Requirements

Each bulb needs a compatible E26 socket and a 120-volt supply. The listing specifies indoor use, so these are suited to a room, party area, or indoor display rather than an outdoor installation. Dimming is advertised, but the supplied information does not identify a particular dimmer type, check your fixture and dimmer setup if brightness adjustment is important.

Usage tips

Use the bulbs where their light can fall on fluorescent pigments, reactive paint, or glow-in-the-dark decorations. For example, an indoor Halloween display with painted props can use black light to bring out the fluorescent effect without relying on ordinary white lighting. The results depend on the materials being illuminated, so a decorative surface that does not react to UV light may show little change.

Buyers describe the purple-toned glow and its effect on fluorescent decorations positively, though reports on brightness are mixed: some find the light vivid, while others want more output. Feedback on lifespan is also varied, despite the listed 20,000-hour figure. These comments are useful context, not a guarantee of what a particular bulb or display will deliver. It’s a great fit if you want several dimmable bulbs for an indoor party or themed setup. It may not suit you if you need a conventional white bulb or a clearly established outdoor-rated option.

Is it worth it?

The main reason to choose this set is its specific role: four A19 bulbs with E26 bases and a stated 385–400 nm UVA range, intended to create black-light effects. That makes it more relevant for reactive decorations than a standard LED bulb, while a conventional bulb is the more practical choice for everyday illumination. If the use is an indoor display and the fixtures match, the pack offers a straightforward way to set up more than one black-light point. The wattage discrepancy and mixed buyer reports on brightness and longevity are worth weighing if precise output or long-term consistency matters.