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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
EMOS Classic Mini Globe, E27, 4,2 W (40 W), 470 lm, warm white, 3 pcs - LED Bulb
7 variants
4.9 142×
EMOS Classic Mini Globe, E27, 4,2 W (40 W), 470 lm, warm white, 3 pcs
LED Bulb - lamp cap E27, power input 4,2 W, 230 V, luminous flux 470 lm, warm light (2700 K), diameter of 4,5 cm, lifespan 30000 h, energy label E, 3 in package - 1.90 €/ks
5.69 €
Buy
In stock > 10 pcs
Order Code: EMOS24084
EMOS Classic Mini Globe, E27, 4.2 W (40 W), 470 lm, warm white - LED Bulb
7 variants
4.9 142×
EMOS Classic Mini Globe, E27, 4.2 W (40 W), 470 lm, warm white
LED Bulb - lamp cap E27, power input 4,2 W, 230 V, luminous flux 470 lm, warm light (2700 K), diameter of 4,5 cm, lifespan 30000 h, energy label E, 1 piece in package
from  3.33 €
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In stock > 10 pcs
Order Code: EMOS24083
EMOS Classic A60, E27, 13 W (100 W), 1521 lm, neutral white - LED Bulb
10+ variants
4.8 170×
EMOS Classic A60, E27, 13 W (100 W), 1521 lm, neutral white
LED Bulb - lamp cap E27, power input 13 W, 230 V, luminous flux 1521 lm, neutral light (4000 K), diameter of 6 cm, lifespan 30000 h, energy label E, 1 piece in package
4.59 €
Buy
In stock > 20 pcs
Order Code: EMOS24077
EMOS LED bulb A60 A CLASS E27 7,2 W 1521 lm neutral white - LED Bulb
10+ variants
4.8 414×
EMOS LED bulb A60 A CLASS E27 7,2 W 1521 lm neutral white
LED Bulb - lamp cap E27, power input 7,2 W, 230 V, luminous flux 1521 lm, neutral light (4000 K), diameter of 6 cm, lifespan 50000 h, energy label A, 1 piece in package
from  6.12 €
Buy
In stock > 10 pcs
Order Code: EMOS24_026
RETLUX RSH 100 C37, E14, 4.5 WATT, RGB, CCT - LED Bulb
4.4 6×
RETLUX RSH 100 C37, E14, 4.5 WATT, RGB, CCT
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,5 W, 230 V, luminous flux 385 lm, adjustable light temperature (6500-2700 K), diameter of 3,8 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
11.90 €
Buy
In stock > 5 pcs
Order Code: RTLX24_001
Niceboy SmartBulb RGB E27, 12 W - LED Bulb
4.4 22×
Niceboy SmartBulb RGB E27, 12 W
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 12 W, 230 V, luminous flux 1050 lm, adjustable light temperature (2700-6500 K), diameter of 6 cm, WiFi 2,4 GHz, compatible with Niceboy ION, control via app in both Czech and English, lifespan 25000 h, energy label F, 1 piece in package
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. 11.12 €
13.90 €
Buy
In stock 5 pcs
Order Code: NCB24_002
EMOS Classic JC G4 1,9 W (21 W) 200 lm, warm white, 2 pcs - LED Bulb
4 variants
4.3 240×
EMOS Classic JC G4 1,9 W (21 W) 200 lm, warm white, 2 pcs
LED Bulb - lamp cap G4, power input 1,9 W, 12 V, luminous flux 200 lm, warm light (3000 K), diameter of 1 cm, lifespan 30000 h, energy label F, 2 in package - from 3.33 €/ks
Amazing Deal from  6.66 €
Buy
In stock > 10 pcs
Order Code: EMOS24_001
EMOS Classic JC G4 1,9 W (21 W) 200 lm, neutral white, 2 pcs - LED Bulb
4 variants
4.3 240×
EMOS Classic JC G4 1,9 W (21 W) 200 lm, neutral white, 2 pcs
LED Bulb - lamp cap G4, power input 1,9 W, 12 V, luminous flux 200 lm, neutral light (4000 K), diameter of 1 cm, lifespan 30000 h, energy label F, 2 in package - from 3.37 €/ks
Amazing Deal from  6.74 €
Buy
In stock > 10 pcs
Order Code: EMOS24_002
IMMAX NEO LITE 3x Smart bulb LED E27 11W RGB+CCT, dimmable, WiFi, Beacon, DO - LED Bulb
3.9 6×
IMMAX NEO LITE 3x Smart bulb LED E27 11W RGB+CCT, dimmable, WiFi, Beacon, DO
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 11 W, 230 V, luminous flux 1055 lm, adjustable light temperature (2700-6500 K), diameter of 6 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Google Home, Tuya, Lidl Home, Smartlife, Nedis SmartLife, Immax NEO PRO, control via app in both Czech and English, lifespan 25000 h, energy label F, 3 in package - from 8.07 €/ks
from  24.21 €
Buy
In stock > 5 pcs
Order Code: IMXX2348
Philips Hue White Ambiance 5.1W 12V MR16 1P EU - LED Bulb
2 variants
5.0 1×
Philips Hue White Ambiance 5.1W 12V MR16 1P EU
LED Bulb - smart, lamp cap GU5,3 - lamp cap GU5,3, power input 5,1 W, 12 V, luminous flux 400 lm, adjustable light temperature (2200-6500 K), diameter of 5 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
36.90 €
Buy
In stock 1 pcs
Order Code: PHLS23018
Philips Hue White and colour ambiance 6.3W 12V MR16 2P EU - LED Bulb
2 variants
4.3 4×
Philips Hue White and colour ambiance 6.3W 12V MR16 2P EU
LED Bulb - smart, lamp cap GU5,3 - lamp cap GU5,3, power input 6,3 W, 230 V, luminous flux 400 lm, adjustable light temperature (2200-6500 K), diameter of 5 cm, Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label G, 2 in package
94.90 €
Buy
In stock 2 pcs
Order Code: PHLS23021
EMOS Smart LED bulb GoSmart A60 E27 11 W (75 W) 1 050 lm RGB dimmable Zigbee - LED Bulb
3.9 14×
EMOS Smart LED bulb GoSmart A60 E27 11 W (75 W) 1 050 lm RGB dimmable Zigbee
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 11 W, 230 V, luminous flux 1050 lm, adjustable light temperature (2700-6500 K), diameter of 6 cm, WiFi 2,4 GHz, compatible with Tuya, Lidl Home, EMOS GoSmart, control via app in both Czech and English, lifespan 20000 h, energy label F, 1 piece in package
10.90 €
Buy
In stock > 5 pcs
Order Code: HM521b10
Wi-Fi BLE A60 E27 922-65 RGB CL 1PF/6 - LED Bulb
Wi-Fi BLE A60 E27 922-65 RGB CL 1PF/6
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 6,3 W, 230 V, luminous flux 470 lm (2200 K), diameter of 6 cm, WiFi 2,4 GHz, control via app in both Czech and English, lifespan 15000 h, energy label G, 1 piece in package
26.90 €
Buy
In stock 1 pcs
Order Code: WiZ23015
EMOS Led bulb Classic JC 4W G9 warm white - LED Bulb
7 variants
4.7 237×
EMOS Led bulb Classic JC 4W G9 warm white
LED Bulb - lamp cap G9, power input 4 W, 230 V, luminous flux 470 lm, warm light (3000 K), diameter of 1,9 cm, lifespan 30000 h, energy label E, 1 piece in package
from  7.92 €
Buy
In stock > 20 pcs
Order Code: EMS17122
Tesla GLOBE G80 VINTAGE, E27, 4, 2W, 230V, 540lm, 2400K, 360deg, gold - LED Bulb
5.0 1×
Tesla GLOBE G80 VINTAGE, E27, 4, 2W, 230V, 540lm, 2400K, 360deg, gold
LED Bulb , power input 4,2 W, 230 V, filament, luminous flux 540 lm (2400 K), diameter of 8 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. 6.69 €
7.87 €
Buy
In stock > 5 pcs
Order Code: TslLight23_009
Tesla - LED bulb BULB E27, 20W, 230V, 2500lm, 25 000h, 3000K warm white 220st - LED Bulb
2 variants
4.4 19×
Tesla - LED bulb BULB E27, 20W, 230V, 2500lm, 25 000h, 3000K warm white 220st
LED Bulb - lamp cap E27, power input 20 W, 230 V, luminous flux 2500 lm, warm light (3000 K), diameter of 8 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. 7.39 €
8.69 €
Buy
In stock > 10 pcs
Order Code: TslLight23_008
Tesla - LED bulb BULB E27, 17W, 230V, 2100lm, 25 000h, 6500K cold white 220st - LED Bulb
3 variants
5.0 11×
Tesla - LED bulb BULB E27, 17W, 230V, 2100lm, 25 000h, 6500K cold white 220st
LED Bulb - lamp cap E27, power input 17 W, 230 V, luminous flux 2100 lm, cool light (6500 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 > 10 pcs
Order Code: TslLight23_007
RETLUX RLL 448 GU10 zar.3step DIMM 6W CW - LED Bulb
2 variants
4.3 15×
RETLUX RLL 448 GU10 zar.3step DIMM 6W CW
LED Bulb - lamp cap GU10, power input 6 W, 230 V, luminous flux 510 lm, neutral light (4000 K), diameter of 5 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. 3.39 €
Discounted -27 % 3.99 € 5.49 €
Buy
In stock > 20 pcs
Order Code: RTLX17157
RETLUX RLL 450 A60 E27 lamp 3DIMM 10W CW - LED Bulb
2 variants
4.2 8×
RETLUX RLL 450 A60 E27 lamp 3DIMM 10W CW
LED Bulb - lamp cap E27, power input 10 W, 230 V, luminous flux 940 lm, neutral light (4000 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. 4.07 €
4.79 €
Buy
In stock > 10 pcs
Order Code: RTLX17158
RETLUX RLL 467 G120 E27 bigG 20W WW - LED Bulb
4.2 17×
RETLUX RLL 467 G120 E27 bigG 20W WW
LED Bulb - lamp cap E27, power input 20 W, 230 V, luminous flux 2050 lm, diameter of 12 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. 5.77 €
6.79 €
Buy
In stock > 10 pcs
Order Code: RTLX17155
RETLUX REL 37 LED GU10 4x5W - LED Bulb
4.6 9×
RETLUX REL 37 LED GU10 4x5W
LED Bulb - lamp cap GU10, power input 5 W, 230 V, luminous flux 425 lm, diameter of 5 cm, lifespan 25000 h, energy label F, 4 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. 5.09 €
Discounted -6 % 5.99 € 6.39 €
Buy
In stock 4 pcs
Order Code: RTLX17137
RETLUX REL 35 LED C37 4x5W E14 WW - LED Bulb
4.9 11×
RETLUX REL 35 LED C37 4x5W E14 WW
LED Bulb - lamp cap E14, power input 5 W, 230 V, luminous flux 430 lm, diameter of 3,7 cm, lifespan 25000 h, energy label F, 4 in package
5.99 €
Buy
In stock > 10 pcs
Order Code: RTLX17135
RETLUX REL 36 LED GU10 2x5W - LED Bulb
4.6 12×
RETLUX REL 36 LED GU10 2x5W
LED Bulb - lamp cap GU10, power input 5 W, 230 V, luminous flux 425 lm, diameter of 5 cm, lifespan 25000 h, energy label F, 2 in package
5.09 €
Buy
In stock > 10 pcs
Order Code: RTLX17136
RETLUX REL 34 LED C37 2x5W E14 WW - LED Bulb
5.0 11×
RETLUX REL 34 LED C37 2x5W E14 WW
LED Bulb - lamp cap E14, power input 5 W, 230 V, luminous flux 430 lm, diameter of 3,7 cm, lifespan 25000 h, energy label F, 2 in package
Discounted -14 % 3.99 € 4.69 €
Buy
In stock > 10 pcs
Order Code: RTLX17134

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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