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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
AlzaPower LED 6-50W, E14, 2700K, Filament, set of 2 - LED Bulb
4.6 134×
AlzaPower LED 6-50W, E14, 2700K, Filament, set of 2
LED Bulb - lamp cap E14, power input 6 W, luminous flux 750 lm, warm light (2700 K), diameter of 3,5 cm, lifespan 25000 h, energy label E, 2 in package - from 2.03 €/ks
Buy with code ALZADAYS20DE 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 ALZADAYS20DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 3.59 €
Great price from  4.05 €
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In stock > 20 pcs
Order Code: APWLED-0013
TESLA LED MINIGLOBE BULB, E14, 3W, 250lm, 4000K Daylight White - LED Bulb
4 variants
4.8 110×
TESLA LED MINIGLOBE BULB, E14, 3W, 250lm, 4000K Daylight White
LED Bulb - lamp cap E14, power input 3 W, 230 V, luminous flux 250 lm, neutral light (4000 K), diameter of 6 cm, lifespan 25000 h, energy label G, 1 piece in package
2.34 €
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In stock > 20 pcs
Order Code: TslLigh22_19
WiZ Tunable White 50W E27 G95 Vintage - LED Bulb
3.9 8×
WiZ Tunable White 50W E27 G95 Vintage
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 6,7 W, 230 V, luminous flux 640 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 F, 1 piece in package
16.90 €
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In stock > 10 pcs
Order Code: WiZ21024
TP-Link Tapo L430C Smart E14 (2-pack) - LED Bulb
3 sizes
4.7 28×
TP-Link Tapo L430C Smart E14 (2-pack)
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,8 W, luminous flux 470 lm (2500 K), diameter of 3,8 cm, WiFi 2,4 GHz, compatible with Manufacturer app, control via app in both Czech and English, lifespan 25000 h, energy label F, 2 in package
27.90 €
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In stock > 5 pcs
Order Code: TP25041
RETLUX RLL 445 E27 bulb 30W WW - LED Bulb
5.0 11×
RETLUX RLL 445 E27 bulb 30W WW
LED Bulb - lamp cap E27, power input 30 W, 230 V, luminous flux 3200 lm, diameter of 10 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. 8.49 €
Discounted -8 % 9.99 € 10.90 €
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In stock > 5 pcs
Order Code: RTLX17123
EMOS Filament A70 / E27 / 18 W (150 W) / 2452 lm / neutral white - LED Bulb
2 variants
4.3 85×
EMOS Filament A70 / E27 / 18 W (150 W) / 2452 lm / neutral white
LED Bulb - lamp cap E27, power input 18 W, 230 V, luminous flux 2452 lm, neutral light (4000 K), diameter of 7 cm, lifespan 25000 h, energy label D, 1 piece in package
Amazing Deal from  6.74 €
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In stock 2 pcs
Order Code: EMOS24159
Govee Smart RGBWW 9 W-60 W, 800 lm, E27, Long Life - LED Bulb
4.8 26×
Govee Smart RGBWW 9 W-60 W, 800 lm, E27, Long Life
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 9 W, 230 V, luminous flux 800 lm, adjustable light temperature (2700-6500 K), diameter of 6 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Google Home, GOVEE Home, control via app in English, lifespan 25000 h, energy label F, 1 piece in package
Buy with code ALZADAYS10DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 10 % Rabatt mit dem Code ALZADAYS10DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 10.71 €
11.90 €
Buy
In stock > 5 pcs
Order Code: Govee24018
IMMAX NEO LITE Smart bulb LED E27 9W RGB+CCT colour and white, dimmable, WiFi - LED Bulb
4.3 125×
IMMAX NEO LITE Smart bulb LED E27 9W RGB+CCT colour and white, dimmable, WiFi
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, Lidl Home, Immax NEO PRO, control via app in both Czech and English, lifespan 25000 h, energy label F, 1 piece in package
8.09 €
Buy
In stock > 10 pcs
Order Code: IMXX19321
Nedis bulb, E14, T25, for oven, 25 W, 140 lm, incandescent - Oven Bulb
4.4 109×
Nedis bulb, E14, T25, for oven, 25 W, 140 lm, incandescent
Oven Bulb - lamp cap E14, power input 25 W, 230 V, luminous flux 140 lm, lifespan 1000 hr(s), energy label G, 1 piece in package
3.39 €
Buy
In stock > 20 pcs
Order Code: Nedis24016
AlzaPower LED 4.2-30W, G9, 2700K, set of 2 - LED Bulb
4.6 85×
AlzaPower LED 4.2-30W, G9, 2700K, set of 2
LED Bulb - lamp cap G9, power input 4,2 W, 230 V, luminous flux 450 lm, warm light (2700 K), diameter of 1,6 cm, lifespan 25000 h, energy label F, 2 in package - 3.05 €/ks
Buy with code ALZADAYS25DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 25 % Rabatt mit dem Code ALZADAYS25DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 4.57 €
Great price 6.09 €
Buy
In stock > 10 pcs
Order Code: APWLED-0015
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
13.90 €
Buy
In stock > 5 pcs
Order Code: TslLigh22_51
EMOS Classic A80 / E27 / 20 W (150 W) / 2452 lm / cool white - LED Bulb
3 variants
4.8 50×
EMOS Classic A80 / E27 / 20 W (150 W) / 2452 lm / cool white
LED Bulb - lamp cap E27, power input 20 W, 230 V, luminous flux 2452 lm, cool light (6500 K), diameter of 8 cm, lifespan 30000 h, energy label E, 1 piece in package
6.79 €
Buy
In stock > 10 pcs
Order Code: EMOS24150
WiZ Tunable White 50W E27 G95 Vintage + WiZ Tunable White 50W E27 G95 Vintage - LED Bulb
WiZ Tunable White 50W E27 G95 Vintage + WiZ Tunable White 50W E27 G95 Vintage
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 8,8 W, 230 V, luminous flux 640 lm, adjustable light temperature (2000-5000 K), diameter of 6 cm, WiFi 2,4 GHz, compatible with Google Home, Samsung SmartThings, IFTTT, Manufacturer app, control via app in both Czech and English, lifespan 15000 h, energy label F, 1 piece in package
34.90 €
Buy
In stock > 5 pcs
Order Code: WiZ24006
MOES Smart Wi-Fi Bulb, E27, RGB, 10W - LED Bulb
3.7 23×
MOES Smart Wi-Fi Bulb, E27, RGB, 10W
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, compatible with Tuya, control via app in both Czech and English, lifespan 25000 h, energy label F, 1 piece in package
10.90 €
Buy
In stock > 10 pcs
Order Code: Moes22_20
Philips Hue White Ambiance 7W 550 Filament ST72 E27 - LED Bulb
5.0 2×
Philips Hue White Ambiance 7W 550 Filament ST72 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 7 W, 230 V, filament, luminous flux 550 lm, adjustable light temperature (2200-4500 K), diameter of 7,2 cm, Bluetooth, compatible with Apple Home, Philips Hue, control via app in both Czech and English, energy label G, 1 piece in package
46.90 €
Buy
In stock 1 pcs
Order Code: PHL21023
Philips LED 60W ST64 E27 2700K CL UE SRT4 - LED Bulb
5.0 3×
Philips LED 60W ST64 E27 2700K CL UE SRT4
LED Bulb - lamp cap E27, power input 60 W, 230 V, luminous flux 840 lm, warm light (2700 K), diameter of 6,4 cm, lifespan 50000 h, energy label A, 1 piece in package
Discounted -5 % 6.59 € 6.99 €
Buy
In stock 1 pcs
Order Code: PHLS25025
Philips Hue White Ambiance 7W 550 Filament G125 E27 - LED Bulb
4.9 8×
Philips Hue White Ambiance 7W 550 Filament G125 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 7 W, 230 V, filament, luminous flux 550 lm, adjustable light temperature (2200-4500 K), diameter of 12,5 cm, Bluetooth, compatible with Apple Home, Philips Hue, control via app in both Czech and English, energy label G, 1 piece in package
46.90 €
Buy
In stock > 5 pcs
Order Code: PHL21024
Philips LED Classic Spot 4.6-50W, GU10, 2700K, 3-Pack - LED Bulb
4 variants
4.8 239×
Philips LED Classic Spot 4.6-50W, GU10, 2700K, 3-Pack
LED Bulb - lamp cap GU10, power input 4,6 W, 230 V, luminous flux 355 lm, warm light (2700 K), diameter of 5 cm, lifespan 15000 h, energy label F, 3 in package - 3.97 €/pcs
11.90 €
Buy
In stock > 10 pcs
Order Code: ESO125b5
Philips 50W GU10 WH 36D ND UE SRT4 - LED Bulb
5.0 1×
Philips 50W GU10 WH 36D ND UE SRT4
LED Bulb - lamp cap GU10, power input 50 W, 230 V, luminous flux 400 lm, warm light (3000 K), diameter of 5 cm, lifespan 50000 h, energy label A, 1 piece in package
Discounted -23 % 9.89 € 12.90 €
Buy
In stock > 5 pcs
Order Code: PHLS25038
EMOS Classic candle E14 4,2 W (40 W) 470 lm, neutral white, 3 pcs - LED Bulb
9 variants
4.9 115×
EMOS Classic candle E14 4,2 W (40 W) 470 lm, neutral white, 3 pcs
LED Bulb - lamp cap E14, power input 4,2 W, 230 V, luminous flux 470 lm, neutral light (4000 K), diameter of 3,5 cm, lifespan 30000 h, energy label E, 3 in package - 1.86 €/ks
5.59 €
Buy
In stock 2 pcs
Order Code: EMOS24200
IMMAX NEO LITE Smart bulb LED E14 6W RGB+CCT colour and white, dimmable, WiFi, P45 - LED Bulb
4.4 30×
IMMAX NEO LITE Smart bulb LED 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, 1 piece in package
from  7.37 €
Buy
In stock > 10 pcs
Order Code: IMXX21389
EMOS LED bulb Classic JC 1,9W G9 warm white - LED Bulb
7 variants
4.7 237×
EMOS LED bulb Classic JC 1,9W G9 warm white
LED Bulb - lamp cap G9, power input 1,9 W, 230 V, luminous flux 210 lm, warm light (3000 K), diameter of 1,5 cm, lifespan 30000 h, energy label E, 1 piece in package
from  4.49 €
Buy
In stock > 20 pcs
Order Code: EMS17117
LED Spotlight, 7W, GU10, 4000K, 560lm, White - LED Bulb
4.8 47×
LED Spotlight, 7W, GU10, 4000K, 560lm, White
LED Bulb - lamp cap GU10, power input 7 W, neutral light (4000 K), diameter of 5 cm, energy label F, 1 piece in package
3.29 €
Buy
In stock > 50 pcs
Order Code: SD2021_126
Philips Hue White Ambiance 6W E14 - LED Bulb
2 variants
4.9 99×
Philips Hue White Ambiance 6W E14
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 6 W, 230 V, luminous flux 470 lm, adjustable light temperature (2200-6500 K), diameter of 3,9 cm, Bluetooth, compatible with Apple Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label G, 1 piece in package
52.90 €
Buy
In stock 4 pcs
Order Code: ESO2557q1
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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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Light Bulbs & Fluorescent Lights

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