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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 BULB E27, 17W, 230V, 2100lm, 25 000h, 3000K warm white 220st - LED Bulb
3 variants
5.0 11×
Tesla - LED bulb BULB E27, 17W, 230V, 2100lm, 25 000h, 3000K warm white 220st
LED Bulb - lamp cap E27, power input 17 W, 230 V, luminous flux 2100 lm, warm light (3000 K), diameter of 6,5 cm, lifespan 25000 h, energy label E, 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. 6.69 €
7.87 €
Buy
In stock 3 pcs
Order Code: TslLight23_005
RETLUX REL 39 LED R50 4x6W E14 WW - LED Bulb
2 variants
4.7 63×
RETLUX REL 39 LED R50 4x6W E14 WW
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 510 lm, warm light (3000 K), diameter of 5 cm, lifespan 25000 h, energy label F, 4 in package
6.43 €
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In stock > 10 pcs
Order Code: RTLX17138
RETLUX REL 38 LED R50 2x6W E14 W - LED Bulb
2 variants
4.7 63×
RETLUX REL 38 LED R50 2x6W E14 W
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 510 lm, warm light (3000 K), diameter of 5 cm, lifespan 25000 h, energy label F, 2 in package
Discounted -12 % 4.39 € 4.99 €
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In stock > 10 pcs
Order Code: RTLX22_040
Philips Hue White 5,5W E14 - LED Bulb
2 variants
4.9 15×
Philips Hue White 5,5W E14
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 5,5 W, 230 V, luminous flux 470 lm, warm light, diameter of 3,9 cm, Bluetooth, compatible with Apple Home, Google Home, lifespan 25000 h, energy label F, 1 piece in package
21.63 €
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In stock 4 pcs
Order Code: PHL19022
Nedis smart LED bulb WIFILRF10C37 - LED Bulb
5.0 10×
Nedis smart LED bulb WIFILRF10C37
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,9 W, 230 V, luminous flux 470 lm, adjustable light temperature (1800-3000 K), diameter of 4,5 cm, WiFi 2,4 GHz, compatible with Tuya, Nedis SmartLife, control via app in both Czech and English, lifespan 10000 h, energy label F, 1 piece in package
18.90 €
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In stock > 5 pcs
Order Code: Nedis22_08
WiZ Tunable White 60W E27 ST64 Filament - LED Bulb
5.0 3×
WiZ Tunable White 60W E27 ST64 Filament
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 E, 1 piece in package
14.90 €
Buy
In stock 3 pcs
Order Code: WiZ21016
Solight LED Spotlight, GU10, 5W, 4000K - LED Bulb
4.9 39×
Solight LED Spotlight, GU10, 5W, 4000K
LED Bulb - lamp cap GU10, power input 5 W, 230 V, neutral light (4000 K), diameter of 5 cm, energy label F, 1 piece in package
2.09 €
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In stock > 20 pcs
Order Code: SD078d1
EMOS Classic MR16, GU10, 4 W (39 W), 450 lm, warm white - LED Bulb
10+ variants
4.8 212×
EMOS Classic MR16, GU10, 4 W (39 W), 450 lm, warm white
LED Bulb - lamp cap GU10, power input 4 W, 230 V, luminous flux 450 lm, warm light (3000 K), diameter of 5 cm, lifespan 30000 h, energy label E, 1 piece in package
from  3.42 €
Buy
In stock > 50 pcs
Order Code: EMOS24211
EMOS Classic MR16 A CLASS/ GU10 / 3 W (40 W) / 535 lm / neutral white - LED Bulb
10+ variants
4.8 212×
EMOS Classic MR16 A CLASS/ GU10 / 3 W (40 W) / 535 lm / neutral white
LED Bulb - lamp cap GU10, power input 3 W, 230 V, luminous flux 535 lm, neutral light (4000 K), diameter of 5 cm, lifespan 50000 h, energy label A, 1 piece in package
4.79 €
Buy
In stock > 20 pcs
Order Code: EMOS24165
EMOS Classic A80 / E27 / 20 W (150 W) / 2452 lm / warm white - LED Bulb
3 variants
4.8 50×
EMOS Classic A80 / E27 / 20 W (150 W) / 2452 lm / warm white
LED Bulb - lamp cap E27, power input 20 W, 230 V, luminous flux 2452 lm, warm light (2700 K), diameter of 8 cm, lifespan 30000 h, energy label E, 1 piece in package
from  6.74 €
Buy
In stock > 10 pcs
Order Code: EMOS24149
Tesla - LED bulb G9, 2W, 230V, 200lm, 4000K daylight white, 2pcs in pack - LED Bulb
3 variants
4.5 60×
Tesla - LED bulb G9, 2W, 230V, 200lm, 4000K daylight white, 2pcs in pack
LED Bulb - lamp cap G9, power input 2 W, 230 V, luminous flux 200 lm, neutral light (4000 K), diameter of 1,6 cm, lifespan 25000 h, energy label F, 2 in package - 3.85 €/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. 6.15 €
7.69 €
Buy
In stock > 10 pcs
Order Code: TslLight240016
RETLUX RLL 431 C37 E14 candle - LED Bulb
3 variants
4.5 47×
RETLUX RLL 431 C37 E14 candle
LED Bulb - lamp cap E14, power input 8 W, 230 V, luminous flux 720 lm, cool light (6500 K), diameter of 3,7 cm, lifespan 25000 h, energy label F, 1 piece in package
Discounted -25 % 3.59 € 4.79 €
Buy
In stock 4 pcs
Order Code: RTLX22_060
RETLUX RLL 428 C37 E14 candle 6W DL - LED Bulb
3 variants
4.5 47×
RETLUX RLL 428 C37 E14 candle 6W DL
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 510 lm, cool light (6500 K), diameter of 3,7 cm, lifespan 25000 h, energy label F, 1 piece in package
Discounted -33 % 2.79 € 4.19 €
Buy
In stock > 10 pcs
Order Code: RTLX22_057
Tesla - LED bulb FILAMENT RETRO BULB E27, 7,2W, 230V, 806lm, 25 000h, 2700K warm white, 360deg - LED Bulb
3 variants
4.4 12×
Tesla - LED bulb FILAMENT RETRO BULB E27, 7,2W, 230V, 806lm, 25 000h, 2700K warm white, 360deg
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, 1 piece in package
4.79 €
Buy
In stock > 5 pcs
Order Code: TslLigh22_71
Nedis smart LED bulb WIFILRC10E14 - LED Bulb
4.0 4×
Nedis smart LED bulb WIFILRC10E14
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,9 W, 230 V, luminous flux 470 lm, adjustable light temperature (2700-6500 K), diameter of 3,7 cm, WiFi 2,4 GHz, compatible with Tuya, Nedis SmartLife, control via app in both Czech and English, lifespan 10000 h, energy label F, 1 piece in package
13.90 €
Buy
In stock > 5 pcs
Order Code: Nedis22_06
Nedis smart LED bulb WIFILRC10E27 - LED Bulb
4.4 5×
Nedis smart LED bulb WIFILRC10E27
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, Nedis SmartLife, control via app in both Czech and English, lifespan 10000 h, energy label F, 1 piece in package
12.90 €
Buy
In stock 3 pcs
Order Code: Nedis22_09
Niceboy SmartBulb RGB E14 - LED Bulb
4.4 38×
Niceboy SmartBulb RGB E14
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 3,6 cm, WiFi 2,4 GHz, compatible with Niceboy ION, control via app in Czech, lifespan 25000 h, energy label F, 1 piece in package
12.90 €
Buy
In stock > 10 pcs
Order Code: NCB21_05
Meross Smart Wi-Fi LED Bulb Apple HomeKit - LED Bulb
3.8 12×
Meross Smart Wi-Fi LED Bulb Apple HomeKit
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 9 W, luminous flux 810 lm (2700 K), WiFi 2,4 GHz, compatible with Apple Home, Samsung SmartThings, IFTTT, Manufacturer app, energy label F, 1 piece in package
19.90 €
Buy
In stock > 10 pcs
Order Code: mer21s21
TESLA LED Bulb Mini-globe BULB E14, 8W, Warm White - LED Bulb
4 variants
4.8 110×
TESLA LED Bulb Mini-globe BULB E14, 8W, Warm White
LED Bulb - lamp cap E14, power input 8 W, 230 V, luminous flux 900 lm, warm light (3000 K), diameter of 6 cm, lifespan 25000 h, energy label E, 1 piece in package
4.79 €
Buy
In stock > 20 pcs
Order Code: TSL19011
Tesla FILAMENT RETRO, E27, 11W, 230V, 1521lm, 25 000h, 4000K daylight white, 360°, clear - LED Bulb
2 variants
4.8 19×
Tesla FILAMENT RETRO, E27, 11W, 230V, 1521lm, 25 000h, 4000K daylight white, 360°, clear
LED Bulb , 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
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. 3.19 €
3.75 €
Buy
In stock > 5 pcs
Order Code: TSL19004
Philips Hue Essential White and colour Ambiance 8W 806 E27 Starter Kit - LED Bulb
Philips Hue Essential White and colour Ambiance 8W 806 E27 Starter Kit
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 8 W, 230 V, luminous flux 806 lm (2200 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label F, 2 in package
79.90 €
Buy
In stock > 5 pcs
Order Code: PHLS25094
EMOS Classic MR16 white, GU10, 3 W (32 W), 345 lm, warm white - LED Bulb
10+ variants
4.8 212×
EMOS Classic MR16 white, GU10, 3 W (32 W), 345 lm, warm white
LED Bulb - lamp cap GU10, power input 3 W, 230 V, luminous flux 345 lm, warm light (3000 K), diameter of 5 cm, lifespan 30000 h, energy label E, 1 piece in package
3.59 €
Buy
In stock > 5 pcs
Order Code: EMOS24210
Tesla - LED bulb BULB E27, 12W, 230V, 1521lm, 25 000h, 3000K warm white 220st - LED Bulb
10+ variants
4.8 212×
Tesla - LED bulb BULB E27, 12W, 230V, 1521lm, 25 000h, 3000K warm white 220st
LED Bulb - lamp cap E27, power input 12 W, 230 V, luminous flux 1521 lm, warm light (3000 K), diameter of 6 cm, lifespan 25000 h, energy label E, 1 piece in package
4.99 €
Buy
In stock > 20 pcs
Order Code: TslLigh22_44
Tesla - LED bulb BULB E27, 9W, 230V, 1055lm, 25 000h, 3000K warm white, 220deg - LED Bulb
10+ variants
4.8 212×
Tesla - LED bulb BULB E27, 9W, 230V, 1055lm, 25 000h, 3000K warm white, 220deg
LED Bulb - lamp cap E27, power input 9 W, 230 V, luminous flux 1055 lm, warm light (3000 K), diameter of 6 cm, lifespan 25000 h, energy label E, 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. 2.29 €
2.69 €
Buy
In stock > 20 pcs
Order Code: TslLigh22_48
 

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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