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4w Light bulbs

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  1. Dimmable.

    Dimmable

  2. Edison screw.

    Edison screw

  3. Bayonet cap.

    Bayonet cap

  4. Small edison screw.

    Small edison screw

  5. GU10.

    GU10

17 products
Philips 4.5W LED SES Dimmable Light Bulb
Rating 4.4 out of 5, from 27 reviews
£6.00
CLEARANCE BADGE
Argos Home 4.2W LED ES Light Bulb - 2 Pack
Rating 4.8 out of 5, from 89 reviews
Product information sheet
£2.50
CLEARANCE BADGE
Argos Home 4.2W LED SES Dimmable Light Bulb - 2 Pack
Rating 4.7 out of 5, from 73 reviews
Product information sheet
Lowest Price Ever
£4.00
CLEARANCE BADGE
Argos Home 4W LED R50 SES Light Bulbs - 2 Pack
Rating 4.8 out of 5, from 39 reviews
Product information sheet
£3.75
Argos Home 3.6W LED GU10 Dimmable Light Bulb - 4 Pack
Rating 4.5 out of 5, from 62 reviews
Product information sheet
£9.00
Philips 4.5W LED SES Dimmable Light Bulb
Rating 4.6 out of 5, from 15 reviews
£6.50
Philips 3.8W LED GU10 Dimmable Light Bulb - 6 Pack
Rating 4.6 out of 5, from 14 reviews
Product information sheet
£22.50
Argos Home 4.2W LED BC Dimmable Light Bulb - 2 Pack
Rating 4.4 out of 5, from 19 reviews
Product information sheet
£5.00
Argos Home 4.2W LED Candle SES Light Bulb - 2 Pack
Rating 4.7 out of 5, from 129 reviews
Product information sheet
£3.50
Osram 4W Filament LED Classic Glass ES GLS Bulb - Twin Pack
Rating 4.7 out of 5, from 48 reviews
Product information sheet
£9.50
CLEARANCE BADGE
Argos Home 4.2W LED Mini Globe ES Light Bulb - 2 Pack
Product information sheet
£2.50
CLEARANCE BADGE
Argos Home 4.2W LED Candle BC Light Bulb - 2 Pack
Rating 4.6 out of 5, from 28 reviews
Product information sheet
£3.50
Argos Home 4.2W LED Mini Globe BC Light Bulb - 2 Pack
Rating 4.8 out of 5, from 56 reviews
Product information sheet
£3.50
Argos Home 4.2W LED Globe SES Light Bulb - 2 Pack
Product information sheet
£3.50
Argos Home 4.2W LED BC Light Bulb - 2 Pack
Rating 4.9 out of 5, from 25 reviews
Product information sheet
£3.50
Osram 4W Filament LED Glass Globe SES Bulb - Twin Pack
Product information sheet
£10.50
Argos Home 4.4W LED Spotlight E27 Light Bulb
Product information sheet
£4.00

Related categories

7W Light Bulbs9w Light bulbs11w Light bulbsSpotlight Light bulbs200w Light bulbsBayonet light bulbsR7 Light bulbsEdison Screw (ES) 60W Light Bulbs60w Light bulbsMulticoloured light bulbs

Energy efficiency with 4W light bulbs

Browse our range of 4W light bulbs to make your home more energy efficient, saving money on bills without sacrificing on brightness or quality. Find dimmable bulbs that you can adjust to the exact brightness you want, helping to wake up in the morning or mellow out before bed. Low wattages mean less power is used, and LED options maximise efficiency without unnecessary heat or wastage.

Find different styles of 4 watt bulbs, like Edison screws, bayonet caps, and GU10 options, so you can outfit low energy options for your lamps, spotlights, ceiling fixtures, and more. With different light ranges, from stark white for extra clarity to comforting yellow to mimic sunlight, you can customise how your home feels without needing to use any more power.

Order your new 4 watt bulbs online for fast home delivery, or replace a burnt out one today with Click & Collect from select locations.