BROLSKUN E27 Screw LED Bulb 4W (40W equivalent) 600lm Edison Screw, Daylight White 5000K – Non-dimmable, 2-pack

If you’re trying to cut down on running costs while keeping your existing E27 lamp setup, this BROLSKUN LED bulb is built for that exact “swap and go” job. It’s a small corn-style LED with an Edison screw (E27) fitting, aimed at replacing a typical 40W incandescent.

That said, it’s not the sort of bulb you buy for fine-tuning brightness or colour mood—this one is non-dimmable, so your lamp’s dimmer control won’t give you the result you might expect.

The essentials

This is a 4W LED screw bulb designed as an energy-saving replacement for 40W incandescent bulbs. The manufacturer’s figures put it at 600lm with a daylight white output described at 5000K, and it’s intended for everyday lighting in rooms like living areas, bedrooms, kitchens and hallways.

On paper, the appeal is straightforward: low power use, an instant-on experience, and a 360-degree beam intended to spread light rather than concentrate it in one direction. For reading and working lamps (where you want the bulb to simply behave), that’s a practical combo.

What you’ll notice day to day

The lighting pitch here is about comfort as much as brightness. The bulb is described as having a colour rendering index (CRI) greater than 80, and the brand frames this as producing more vivid, natural-looking light. In a room with neutral decor or work surfaces, that’s the kind of detail that can make light feel less harsh than basic LEDs.

There’s also a durability angle: the bulb is claimed to be mercury-free and designed with a long service life (up to 25,000 hours). It’s also rated IP54 for dust-proof and waterproof use, which matters if the lamp sits in an exposed spot, like a bathroom wall light area.

Still, take “no flicker” and “no buzzing” as the seller’s intended experience rather than a guarantee you can confirm from specs alone.

Key features that matter for buying

What stands out most is the replacement logic. If your current lamp uses an E27 screw socket, you’re not dealing with compatibility uncertainty beyond that fitting.

Here’s what the listing suggests you’re getting:

• Power and output: 4W LED intended to replace a 40W incandescent, with 600lm output
• Colour: daylight white at 5000K
• Beam: 360-degree beam angle for broad coverage
• Controls: non-dimmable, instant on with no delay
• Longevity and build: up to 25,000 hours, mercury-free and IP54 dust/water resistance

Usage tips

This type of “small corn bulb” is the sort of upgrade that works well when you want consistent illumination across the room rather than a spotlight effect. A practical example: swap it into a desk or wall reading lamp that currently uses a 40W incandescent. Because it’s 360-degree, you should get more even fill across the area instead of lighting one narrow patch.

A couple of real-world points to keep in mind:

• If your lamp has a dimmer switch, you’ll likely find this isn’t the best match because it’s non-dimmable.
• IP54 can be a plus for bathrooms, but you’ll still want to check your specific fitting’s suitability for that environment (the bulb rating doesn’t replace installation requirements).

Tech specs

• Type: LED corn bulb (E27 screw)
• Wattage: 4W
• Equivalent: 40W incandescent equivalent
• Brightness: 600lm
• Colour temperature: 5000K (daylight white)
• Beam angle: 360 degree
• CRI: >80
• Dimmable: Non-dimmable
• Service life: up to 25,000 hours
• Ingress protection: IP54 (dust-proof and waterproof)

Should you buy it?

It’s worth considering if you want an everyday, daylight-white LED replacement for E27 lamps, particularly where you’re trying to reduce energy use compared with older incandescent bulbs. The non-flicker/no-buzzing claim and CRI figure suggest it’s aimed at normal living and working lighting, not just basic “it’ll do” illumination.

You may want to skip it if you need dimming control, because the bulb is explicitly non-dimmable. It might not suit you either if your priority is very warm, cosy lighting, since 5000K sits firmly in the daylight category rather than a softer warm white.

For buyers who like clear swaps: if your existing lamp takes an E27 screw bulb and you’re happy with daylight white, this 2-pack can make sense. If you want flexibility with dimmers or prefer warmer tones, you’ll probably be happier looking for a different spec.

Mini FAQ

Is this LED bulb dimmable?

No. It’s listed as non-dimmable, so it’s best suited to setups where you only switch it on/off.

What colour temperature is it?

It’s described as daylight white at 5000K.

Will it replace a 40W incandescent?

The listing positions it as a replacement for a 40W incandescent, using 4W of LED power and 600lm output.

What’s the light spread like?

The bulb is described as 360-degree, which is intended to distribute light across a wider area.

Is it suitable for damp or dusty areas?

The listing claims an IP54 dust-proof and waterproof rating, but you should still consider your lamp fitting and installation environment.