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Light Bulbs & Fluorescent Lights

What type of bulb and socket to choose? We will advise you.

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Socket

The base part of the bulb that connects to the lamp. There are several types of fittings:

E27

 27 mm in diameter, this is one of the most common fittings. It’s used by almost every light source with a voltage of 230 V, i.e. classic incandescent lamps, halogen, energy-saving, and LED bulbs. You can usually find this type in ceiling or wall lighting fixtures or chandeliers.

E14

 Has the same screw as E27, so once again, it’s used in classic incandescent lamps, halogen, energy-saving, and LED bulbs. They differ only in diameter, which in this case is 14 mm. The operating voltage is 230 V. Commonly used in smaller lamps, spot lights, and candelabra and chandeliers consisting of a large number of light bulbs.

GU10

 This slot has no screw. Instead, it has two pins with a diameter of 5 mm that you snap into the lamp and twist slightly. Its operating voltage is 230 V and this type is most commonly encountered in halogen or LED bulbs. It is used in ceiling lights, spot lights, or in bathroom and lavatory fixtures.

G4

 A threadless socket, it features two pins 4 mm apart that you snap into the lamp. Its operating voltage is 12V. Most commonly found in kitchen counter lighting fixtures, low ceilings, or bars.

GU5.3

 Another threadless socket, it features two pins 1 mm in diameter and spaced 5.3 mm apart. The socket is designed for 12V. The light source is usually a halogen or LED bulb. Mainly used in smaller lamps and spot lights.

G9

 A threadless socket similar to GU10. It has two pins that snap into the lamp. This is the smallest size for 230V halogen and LED bulbs. Most commonly used in ceiling fixtures, spot lights, or in bathroom and lavatory fixtures.

R7s

 A linear, tube-shaped socket inserted into a fork with a pitch of 78-189 mm. Its operating voltage is 230 V. Used in halogen spotlights, LED lamps, floor lamps, or architectural lighting fixtures.

Technology

Incandescent light bulbs

  • The cheapest light source when it comes to purchase cost. The massive heat loss, however, makes them very inefficient. Over 90% of the consumed energy is converted into heat and only the remaining 10% into light. Their service life is also low – 1,000 hours on average.

Halogen bulbs

  • About 30% more efficient than incandescent bulbs. Illuminate at the full power right after you switch them on, can be dimmed, and their purchase cost is lower than that of LED bulbs. Their operating costs are considerably higher, so they are mainly used in places where you need strong light for a short time. Their service life is 2,000 to 3,000 hours.

Energy-effcient light bulbs

  • Roughly 75% more efficient than incandescent bulbs. After switching, it takes a while before they reach their maximum brightness, so they aren’t suitable for places where lights are often turned on and off. Lose their original luminance after a few years. Their service life ranges between 6,000 and 20,000 hours.

LED bulbs

  • The latest and most efficient technology. Their service life is remarkable - usually between 20,000 and 50,000 hours. Achieve high brightness with minimum energy consumption. A 9W LED bulb is equivalent to a 60W halogen lamp.
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762 Results
Tesla - LED bulb CONE BULB VINTAGE, E27, 4,2W, 230V, 380lm, 25 000h, 2400K, 360deg, gold - LED Bulb
2 colors
Tesla - LED bulb CONE BULB VINTAGE, E27, 4,2W, 230V, 380lm, 25 000h, 2400K, 360deg, gold
LED Bulb - lamp cap E27, power input 4,2 W, 230 V, luminous flux 380 lm (2400 K), diameter of 6,4 cm, lifespan 25000 h, energy label F, 1 piece in package
Buy with code ALZADAYS20AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 20 % Rabatt mit dem Code ALZADAYS20AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 4.50 €
5.62 €
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In stock > 5 pcs
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Order Code: TslLigh22_78
Tesla GLOBE G95 VINTAGE, E27, 4, 2W, 230V, 380lm, 2400K, 360deg, gold - LED Bulb
Tesla GLOBE G95 VINTAGE, E27, 4, 2W, 230V, 380lm, 2400K, 360deg, gold
LED Bulb , power input 4,2 W, 230 V, filament, luminous flux 380 lm (2400 K), diameter of 9,5 cm, lifespan 25000 h, energy label F, 1 piece in package
Buy with code ALZADAYS15AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 15 % Rabatt mit dem Code ALZADAYS15AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 7.90 €
9.29 €
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In stock 1 pcs
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Order Code: TslLigh22_74
Tesla - LED bulb BULB E27, 8W, 230V, 806lm, 25 000h, 3000K warm white, 220st 5pcs in pack - LED Bulb
10+ variants
4.8 212×
Tesla - LED bulb BULB E27, 8W, 230V, 806lm, 25 000h, 3000K warm white, 220st 5pcs in pack
LED Bulb - lamp cap E27, power input 8 W, 230 V, luminous flux 806 lm, warm light (3000 K), diameter of 6 cm, lifespan 25000 h, energy label F
Buy with code ALZADAYS15AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 15 % Rabatt mit dem Code ALZADAYS15AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 5.35 €
6.29 €
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In stock 4 pcs
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Order Code: TslLigh22_63
Tesla - LED bulb FILAMENT RETRO candle E14, 6W, 230V, 806lm, 25 000h, 2700K warm white, 360deg, clea - LED Bulb
4.8 16×
Tesla - LED bulb FILAMENT RETRO candle E14, 6W, 230V, 806lm, 25 000h, 2700K warm white, 360deg, clea
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 806 lm, warm light (2700 K), diameter of 3,5 cm, lifespan 25000 h, energy label E, 1 piece in package
from  2.97 €
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In stock 1 pcs
Order Code: TslLigh22_57
Tesla - LED bulb BULB E27, 8.5W, 230V, 806lm, 25 000h, 4000K daylight white, 220pc 5pcs in pack - LED Bulb
10+ variants
4.8 212×
Tesla - LED bulb BULB E27, 8.5W, 230V, 806lm, 25 000h, 4000K daylight white, 220pc 5pcs in pack
LED Bulb - lamp cap E27, power input 8,5 W, luminous flux 806 lm, neutral light (4000 K), energy label F
Buy with code ALZADAYS15AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 15 % Rabatt mit dem Code ALZADAYS15AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 6.69 €
7.87 €
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In stock > 10 pcs
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Order Code: TslLigh22_56
Tesla - LED bulb FILAMENT RETRO BULB E27, 7,2W, 230V, 806lm, 25 000h, 2700K warm white, 360deg, clea - LED Bulb
2 variants
4.8 19×
Tesla - LED bulb FILAMENT RETRO BULB E27, 7,2W, 230V, 806lm, 25 000h, 2700K warm white, 360deg, clea
LED Bulb - lamp cap E27, power input 7,2 W, 230 V, luminous flux 806 lm, warm light (2700 K), diameter of 6 cm, lifespan 25000 h, energy label E
13.52 €
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In stock > 5 pcs
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Order Code: TslLigh22_51
Tesla - LED bulb BULB E27, 8W, 230V, 806lm, 25 000h, 4000K daylight white, 220st 3pcs in pack - LED Bulb
10+ variants
4.8 212×
Tesla - LED bulb BULB E27, 8W, 230V, 806lm, 25 000h, 4000K daylight white, 220st 3pcs in pack
LED Bulb - lamp cap E27, power input 8 W, 230 V, luminous flux 806 lm, neutral light (4000 K), diameter of 6 cm, lifespan 25000 h, energy label F, 3 in package - 2.11 €/pcs
6.34 €
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In stock 2 pcs
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Order Code: TslLigh22_54
RETLUX RLL 298 G4 3,5 W LED 12V WW - LED Bulb
4.7 12×
RETLUX RLL 298 G4 3,5 W LED 12V WW
LED Bulb - lamp cap G4, power input 3,5 W, 12 V, luminous flux 380 lm, warm light (3000 K), diameter of 1,5 cm, lifespan 15000 h, energy label F, 1 piece in package
7.30 €
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In stock > 5 pcs
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Order Code: RTLX22_005
TESLA LED BULB, G9, 4W, 400lm, 4000K Daylight White - LED Bulb
3 variants
4.5 60×
TESLA LED BULB, G9, 4W, 400lm, 4000K Daylight White
LED Bulb - lamp cap G9, power input 4 W, 230 V, luminous flux 400 lm, neutral light (4000 K), diameter of 1,8 cm, lifespan 25000 h, energy label F, 2 in package - 4.10 €/pcs
8.20 €
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
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Order Code: TslLigh22_07
TESLA LED BULB, G9, 4W, 400lm, 3000K Warm White, 2 pcs - LED Bulb
3 variants
4.5 60×
TESLA LED BULB, G9, 4W, 400lm, 3000K Warm White, 2 pcs
LED Bulb - lamp cap G9, power input 4 W, 230 V, luminous flux 400 lm, warm light (3000 K), diameter of 1,8 cm, lifespan 25000 h, energy label F, 2 in package - 4.10 €/pcs
8.20 €
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In stock > 10 pcs
Order Code: TslLigh22_04
WiZ Tunable White 25W E27 PS160 Vintage - LED Bulb
WiZ Tunable White 25W E27 PS160 Vintage
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 6,5 W, 230 V, luminous flux 390 lm, adjustable light temperature (2000-5000 K), WiFi 2,4 GHz, compatible with Samsung SmartThings, IFTTT, control via app in both Czech and English, lifespan 15000 h, energy label G, 1 piece in package
46.90 €
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In stock 2 pcs
Order Code: WiZ21027
IMMAX NEO LITE SMART LED bulb GU10 6W colour and white WiFi - LED Bulb
4.5 39×
IMMAX NEO LITE SMART LED bulb GU10 6W colour and white WiFi
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,8 W, 230 V, luminous flux 400 lm, adjustable light temperature (2700-6500 K), diameter of 5 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Tuya, Lidl Home, Immax NEO PRO, control via app in both Czech and English, lifespan 25000 h, energy label G, 1 piece in package
14.90 €
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: IMXX21369
Tesla GLOBE G125 VINTAGE, E27, 4W, 230V, 380lm, 2400K, 360deg, gold - LED Bulb
4.4 3×
Tesla GLOBE G125 VINTAGE, E27, 4W, 230V, 380lm, 2400K, 360deg, gold
LED Bulb , power input 4 W, 230 V, filament, luminous flux 380 lm, warm light (2400 K), diameter of 12,5 cm, lifespan 15000 h, energy label F, 1 piece in package
Buy with code ALZADAYS15AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 15 % Rabatt mit dem Code ALZADAYS15AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 8.50 €
10 €
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In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: TSL19001
IMMAX NEO LITE Smart bulb LED G9 4W CCT, warm, cool white, dimmable, WiFi, TUYA - LED Bulb
4.6 16×
IMMAX NEO LITE Smart bulb LED G9 4W CCT, warm, cool white, dimmable, WiFi, TUYA
LED Bulb - smart, lamp cap G9 - lamp cap G9, power input 4 W, 230 V, luminous flux 400 lm, adjustable light temperature (2700-6500 K), diameter of 1,8 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Tuya, Lidl Home, Immax NEO PRO, control via app in both Czech and English, lifespan 25000 h, energy label E, 1 piece in package
from  13.41 €
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In stock 1 pcs
Order Code: IMXX21387
Philips Hue White and colour Ambiance 11W 1100 E27 - LED Bulb
2 variants
4.8 157×
Philips Hue White and colour Ambiance 11W 1100 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 11 W, 230 V, luminous flux 1100 lm (2000 K), diameter of 6 cm, Bluetooth, compatible with Apple Home, Philips Hue, control via app in both Czech and English, energy label F, 1 piece in package
76.37 €
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On the way 1 pcs
Expected 16/04/2026
Order Code: PHL21026
AlzaPower LED 1.8-32W, G4, 2700K, set of 2 - LED Bulb
3.8 27×
AlzaPower LED 1.8-32W, G4, 2700K, set of 2
LED Bulb - lamp cap G4, power input 1,8 W, 12 V, luminous flux 180 lm, warm light (2700 K), diameter of 1,4 cm, lifespan 25000 h, energy label F, 2 in package - 3.05 €/ks
Great price 6.10 €
Buy
On the way > 5 pcs
Expected 17/04/2026
Order Code: APWLED-0014a
Philips 13-100W LED, E27, 2700K, matte (6 pcs) - LED Bulb
4.8 158×
Philips 13-100W LED, E27, 2700K, matte (6 pcs)
LED Bulb - lamp cap E27, power input 13 W, 230 V, luminous flux 1521 lm, warm light (2700 K), diameter of 6 cm, lifespan 15000 h, energy label E, 6 pc(s) in package - from 3.96 €/pcs
from  23.74 €
Buy
On the way > 5 pcs
Expected 12/05/2026
Order Code: ESO110c2
Govee Smart RGBWW 5W-50W, 450 lm, E14, Long Life Matter, 2 pcs - LED Bulb
5.0 2×
Govee Smart RGBWW 5W-50W, 450 lm, E14, Long Life Matter, 2 pcs
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,8 W, 230 V, luminous flux 450 lm (2700 K), diameter of 3,8 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Google Home, Samsung SmartThings, GOVEE Home, control via app in English, lifespan 25000 h, energy label F, 2 in package - 13.45 €/ks
26.90 €
Buy
On the way > 5 pcs
Expected 16/04/2026
Order Code: Govee25012
RETLUX RSH 102 A 60, E27, 9 WATT, RGB, CCT - LED Bulb
4.3 10×
RETLUX RSH 102 A 60, E27, 9 WATT, RGB, CCT
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 9 W, 230 V, luminous flux 806 lm, adjustable light temperature (6500-2700 K), diameter of 6 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Google Home, Tuya, Lidl Home, Smartlife, Manufacturer app, control via app in both Czech and English, lifespan 15000 h, energy label F, 1 piece in package
12.90 €
Buy
On the way 1 pcs
Expected 10/05/2026
Order Code: RTLX24_003
IMMAX NEO LITE Smart 3x LED bulb E14 6W RGB+CCT colour and white, dimmable, WiFi, P45 - LED Bulb
4.3 10×
IMMAX NEO LITE Smart 3x LED bulb E14 6W RGB+CCT colour and white, dimmable, WiFi, P45
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 6 W, 230 V, luminous flux 470 lm, adjustable light temperature (2700-6500 K), diameter of 4,5 cm, WiFi 2,4 GHz, compatible with Apple Siri shortcuts, Tuya, Lidl Home, Immax NEO PRO, control via app in both Czech and English, lifespan 25000 h, energy label F, 3 in package - from 6.57 €/ks
from  19.72 €
Buy
On the way 1 pcs
Expected 17/04/2026
Order Code: IMXX21388
IMMAX NEO LITE Smart set 3x LED bulb G9 4W CCT, dimmable, WiFi, TUYA - LED Bulb
5.0 3×
IMMAX NEO LITE Smart set 3x LED bulb G9 4W CCT, dimmable, WiFi, TUYA
LED Bulb - smart, lamp cap G9 - lamp cap G9, power input 4 W, 230 V, luminous flux 400 lm, adjustable light temperature (2700-6500 K), diameter of 1,8 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Tuya, Lidl Home, Immax NEO PRO, control via app in both Czech and English, lifespan 25000 h, energy label E, 3 in package - 12.97 €/ks
38.90 €
Buy
On the way 2 pcs
Expected 16/04/2026
Order Code: IMMX23_28
IMMAX NEO LITE E27 9W RGB+CCT, colour and white, WiFi - pack of 3 - LED Bulb
4.0 15×
IMMAX NEO LITE E27 9W RGB+CCT, colour and white, WiFi - pack of 3
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 9 W, 230 V, luminous flux 806 lm, adjustable light temperature (2700-6500 K), diameter of 6 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Tuya, Samsung SmartThings, Lidl Home, Immax NEO PRO, control via app in both Czech and English, lifespan 25000 h, energy label F, 3 in package - 7.18 €/pcs
21.54 €
Buy
On the way 1 pcs
Expected 16/04/2026
Order Code: IMMX_21_25
EMOS LED bulb Classic Mini Globe 5W E14 warm white - LED Bulb
4.9 47×
EMOS LED bulb Classic Mini Globe 5W E14 warm white
LED Bulb - lamp cap E14, power input 5 W, 230 V, luminous flux 470 lm, warm light (2700 K), diameter of 4,5 cm, lifespan 30000 h, energy label F, 1 piece in package
from  2.43 €
Buy
On the way > 5 pcs
Expected 16/04/2026
Order Code: EMS17045
Philips Hue White 10W 1100 E27 - LED Bulb
Philips Hue White 10W 1100 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 10 W, 230 V, luminous flux 1055 lm, adjustable light temperature (2700-2700 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label E, 1 piece in package
23.90 €
Buy
On the way 1 pcs
Expected 21/04/2026
Order Code: PHLS25076

Light Bulbs & Fluorescent Lights

Alza Days LED Bulbs LED bulbs Light Bulbs & Fluorescent Lights Sorted by Socket by Socket Fluorescent Tube Lamps Fluorescent Tubes Smart Light Bulbs Light Sources Efficient Lamps Efficient Spotlight Bulbs Spotlight Oven Light Bulbs Oven Vintage & Retro Light Bulbs Retro Light Bulb Value Packs Value Packs AlzaPower Light Bulbs & Fluorescent Lights AlzaPower Jak vybrat žárovku
 

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