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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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757 Results
Tesla LED bulb G9, 2W, 230V, 200lm, 3000K warm white, 2pcs in pack - LED Bulb
Tesla LED bulb G9, 2W, 230V, 200lm, 3000K warm white, 2pcs in pack
LED Bulb - lamp cap G9, power input 2 W, 230 V, luminous flux 200 lm, warm light, diameter of 1,6 cm, lifespan 20000 h, energy label F, 2 in package
8.79 €
Buy
In stock > 10 pcs
Order Code: TslLight25019
EMOS Classic MR16, GU10, 7 W (60 W), 800 lm, warm white, step dimmable - LED Bulb
2 variants
EMOS Classic MR16, GU10, 7 W (60 W), 800 lm, warm white, step dimmable
LED Bulb - lamp cap GU10, power input 7 W, 230 V, luminous flux 800 lm, warm light (3000 K), diameter of 5 cm, lifespan 25000 h, energy label E, 1 piece in package
5.24 €
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In stock > 10 pcs
Order Code: EMOS25194
EMOS Filament A60, E27, 11 W (100 W), 1521 lm, neutral white, dimmable - LED Bulb
4 variants
4.0 4×
EMOS Filament A60, E27, 11 W (100 W), 1521 lm, neutral white, dimmable
LED Bulb - lamp cap E27, power input 11 W, 230 V, filament, luminous flux 1521 lm, neutral light (4000 K), diameter of 6 cm, lifespan 25000 h, energy label D, 1 piece in package
5.39 €
Buy
In stock > 10 pcs
Order Code: EMOS25201
EMOS Filament A60, E27, 11 W (100 W), 1521 lm, warm white, dimmable - LED Bulb
4 variants
4.0 4×
EMOS Filament A60, E27, 11 W (100 W), 1521 lm, warm white, dimmable
LED Bulb - lamp cap E27, power input 11 W, 230 V, filament, luminous flux 1521 lm, warm light (2700 K), diameter of 6 cm, lifespan 25000 h, energy label D, 1 piece in package
5.39 €
Buy
In stock > 10 pcs
Order Code: EMOS25200
EMOS Classic MR16, GU10, 7 W (60 W), 800 lm, neutral white, dimmable - LED Bulb
2 variants
EMOS Classic MR16, GU10, 7 W (60 W), 800 lm, neutral white, dimmable
LED Bulb - lamp cap GU10, power input 7 W, 230 V, luminous flux 800 lm, neutral light (4000 K), diameter of 5 cm, lifespan 25000 h, energy label E, 1 piece in package
5.24 €
Buy
In stock > 10 pcs
Order Code: EMOS25197
EMOS Classic MR16, GU10, 7 W (60 W), 800 lm, warm white, dimmable - LED Bulb
2 variants
EMOS Classic MR16, GU10, 7 W (60 W), 800 lm, warm white, dimmable
LED Bulb - lamp cap GU10, power input 7 W, 230 V, luminous flux 800 lm, warm light (3000 K), diameter of 5 cm, lifespan 25000 h, energy label E, 1 piece in package
Amazing Deal 4.19 €
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In stock 1 pcs
Order Code: EMOS25196
EMOS DECO SMOKED ST64, E27, 4,5 W (19 W), 180 lm, flame - LED Bulb
5.0 1×
EMOS DECO SMOKED ST64, E27, 4,5 W (19 W), 180 lm, flame
LED Bulb - lamp cap E27, power input 4,5 W, 230 V, filament, luminous flux 180 lm, warm light (1800 K), diameter of 6,4 cm, lifespan 25000 h, energy label G, 1 piece in package
Great price 8.19 €
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In stock > 10 pcs
Order Code: EMOS25186
EMOS DECO SMOKED A60, E27, 4,5 W (19 W), 180 lm, flame - LED Bulb
4.5 4×
EMOS DECO SMOKED A60, E27, 4,5 W (19 W), 180 lm, flame
LED Bulb - lamp cap E27, power input 4,5 W, 230 V, filament, luminous flux 180 lm, warm light (1800 K), diameter of 6 cm, lifespan 25000 h, energy label G, 1 piece in package
6.29 €
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In stock > 10 pcs
Order Code: EMOS25185
EMOS DECO SMOKED G95, E27, 4,5 W (19 W), 180 lm, flame - LED Bulb
EMOS DECO SMOKED G95, E27, 4,5 W (19 W), 180 lm, flame
LED Bulb - lamp cap E27, power input 4,5 W, 230 V, filament, luminous flux 180 lm, warm light (1800 K), diameter of 9,5 cm, lifespan 25000 h, energy label G, 1 piece in package
8.90 €
Buy
In stock > 5 pcs
Order Code: EMOS25187
Tesla - LED bulb BULB E27, 8W, 230V, 806lm, 25 000h, 6500K cold white, 220deg - LED Bulb
10+ variants
4.8 212×
Tesla - LED bulb BULB E27, 8W, 230V, 806lm, 25 000h, 6500K cold white, 220deg
LED Bulb - lamp cap E27, power input 8 W, 230 V, luminous flux 806 lm, cool light, diameter of 6 cm, lifespan 25000 h, energy label F, 1 piece in package
3.19 €
Buy
In stock > 5 pcs
Order Code: TslLight25011
Tesla - LED bulb GX53, 6W, 230V, 480lm, 25 000h, 4000K daylight white, 220deg - LED Bulb
3 variants
4.6 55×
Tesla - LED bulb GX53, 6W, 230V, 480lm, 25 000h, 4000K daylight white, 220deg
LED Bulb - lamp cap GX53, power input 6 W, 230 V, luminous flux 480 lm, neutral light, diameter of 7,4 cm, lifespan 25000 h, energy label F, 1 piece in package
5.69 €
Buy
In stock 4 pcs
Order Code: TslLight25016
Tesla BULB, E27, 6W, 230V, 640lm, 25 000h, 6500K cold white, 220deg - LED Bulb
10+ variants
4.8 212×
Tesla BULB, E27, 6W, 230V, 640lm, 25 000h, 6500K cold white, 220deg
LED Bulb , power input 6 W, 230 V, luminous flux 640 lm, cool light (6500 K), diameter of 6 cm, lifespan 25000 h, energy label F, 1 piece in package
Buy with code ALZADAYS15DE 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 ALZADAYS15DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 2.37 €
Discounted -15 % 2.79 € 3.29 €
Buy
In stock > 5 pcs
Order Code: TslLight25012
Xtend Home XTH-LED-E1448T - LED Bulb
5.0 2×
Xtend Home XTH-LED-E1448T
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,8 W, 240 V, luminous flux 450 lm, WiFi 2,4 GHz, compatible with Tuya, control via app in Czech, lifespan 25000 h, energy label F, 1 piece in package
11.90 €
Buy
In stock > 5 pcs
Order Code: Xtend25019
Xtend Home XTH-LED-E2711T - LED Bulb
3.7 3×
Xtend Home XTH-LED-E2711T
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 11 W, 240 V, luminous flux 1050 lm, WiFi 2,4 GHz, compatible with Tuya, control via app in Czech, lifespan 25000 h, energy label F, 1 piece in package
7.69 €
Buy
In stock > 10 pcs
Order Code: Xtend25017
Xtend Home XTH-LED-E2714T - LED Bulb
4.4 3×
Xtend Home XTH-LED-E2714T
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 14 W, 240 V, luminous flux 1400 lm, WiFi 2,4 GHz, compatible with Tuya, control via app in Czech, lifespan 25000 h, energy label F, 1 piece in package
10.90 €
Buy
In stock > 10 pcs
Order Code: Xtend25018
Philips Hue White and colour Ambiance 8,1W 1100 E27 - LED Bulb
3.0 1×
Philips Hue White and colour Ambiance 8,1W 1100 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 8,1 W, 230 V, luminous flux 1100 lm (1000 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label D, 1 piece in package
67.90 €
Buy
In stock > 5 pcs
Order Code: PHLS25086
Philips Hue White 14W 1600 E27 - LED Bulb
Philips Hue White 14W 1600 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 14 W, 230 V, luminous flux 1600 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
29.90 €
Buy
In stock > 5 pcs
Order Code: PHLS25078
Philips Hue White and colour Ambiance 8,1W 1100 E27 2pcs - LED Bulb
5.0 2×
Philips Hue White and colour Ambiance 8,1W 1100 E27 2pcs
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 8,1 W, 230 V, luminous flux 1100 lm (1000 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label D, 2 in package
114.90 €
Buy
In stock 4 pcs
Order Code: PHLS25087
Philips Hue White and colour Ambiance 6W 810 E27 2pcs - LED Bulb
Philips Hue White and colour Ambiance 6W 810 E27 2pcs
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 6 W, 230 V, luminous flux 800 lm (1000 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label D, 2 in package
103.90 €
Buy
In stock 2 pcs
Order Code: PHLS25084
Philips Hue White Ambiance 6W 810 E27 2pcs - LED Bulb
Philips Hue White Ambiance 6W 810 E27 2pcs
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 6 W, 230 V, luminous flux 800 lm (1000 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label D, 2 in package
57.90 €
Buy
In stock 3 pcs
Order Code: PHLS25079
Philips Hue White 10W 1100 E27 2pcs - LED Bulb
5.0 3×
Philips Hue White 10W 1100 E27 2pcs
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, 2 in package
36.90 €
Buy
In stock > 5 pcs
Order Code: PHLS25077
RETLUX RHL 220 G9 40W Oven WW - Oven Bulb
RETLUX RHL 220 G9 40W Oven WW
Oven Bulb - energy label G, power input 40 W, 230 V, luminous flux 460 lm, warm light (3000 K), colour Rendering Index (CRI) 80 Ra, diameter 1,3 cm, lifetime 2000 h
4.39 €
Buy
In stock > 20 pcs
Order Code: RTLX25016
RETLUX RFL 603 Filament A60 E27 5.2W WW A - LED Bulb
RETLUX RFL 603 Filament A60 E27 5.2W WW A
LED Bulb , power input 5,2 W, 230 V, filament, luminous flux 1100 lm, warm light (3000 K), diameter of 6 cm, lifespan 25000 h, energy label A, 1 piece in package
Buy with code ALZADAYS15DE 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 ALZADAYS15DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 4.41 €
5.19 €
Buy
In stock > 10 pcs
Order Code: RTLX25017
OSRAM SPC. T25/57, E14, 10W, 300 °C, clear - pack of 2 - Oven Bulb
4.0 4×
OSRAM SPC. T25/57, E14, 10W, 300 °C, clear - pack of 2
Oven Bulb - energy label G, power input 10 W, 230 V, Filament, luminous flux 30 lm, warm light (2700 K), diameter 2,5 cm, lifetime 1000 h, 2 pieces in the package
3.09 €
Buy
In stock 1 pcs
Order Code: osra25111

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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