# LED bulb Synergy21 Retrofit GU10 4W 3000K 400lm 60°

**URL:** https://aio.lv/en/product--synergy21-s21-led-tom00081--12099470
**Data updated:** 2026-03-20 09:52 (EET)
**Category:** LED Bulbs
**Manufacturer:** Synergy21
**Manufacturer code:** S21-LED-TOM00081
**EAN:** 4038816999665
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.49 €
**Prices and availability valid until:** 2026-08-10 23:59
**Price without VAT (21%):** 9.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--synergy21-s21-led-tom00081--12099470

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

Synergy21 Retrofit LED bulb with GU10 base, 4 W power and warm white 3000 K colour temperature. Provides 400 lm luminous flux, up to 35,000 h lifetime and a beam angle of 60°. Suitable for recessed, track and spot lighting where compact, energy-efficient warm lighting is needed for homes and small commercial spaces.

## Long description

Synergy21 Retrofit GU10 LED bulb, 4 W, delivers warm white light at 3000 K with a luminous flux of 400 lm and a beam angle of 60°. Designed as a direct retrofit for fixtures using a GU10 base, this compact lamp fits recessed downlights, track heads and spot luminaires where focused, energy-efficient illumination is required. The bulb operates across a wide input voltage range and is specified for a long rated lifetime, making it suitable for domestic and small commercial applications that need stable warm lighting with low power consumption.
Advantages
The LED bulb offers immediate energy savings compared with equivalent halogen lamps while maintaining a warm 3000 K colour temperature. With a rated lifetime of up to 35,000 hours and a robust beam angle of 60°, it provides consistent directional light for accent and task lighting. The small, retrofit GU10 form factor allows straightforward replacement without modifying existing fixtures, and the broad input voltage compatibility supports reliable operation in varied electrical environments.
Suitable for
 Recessed ceiling downlights in living spaces and corridors
 Track lighting for accentuating artwork, retail displays or kitchen worktops
 Spot fixtures for task lighting in home offices and reading areas
 Small commercial spaces requiring warm, energy-efficient spot illumination
Key specifications
 Base type: GU10
 Rated power: 4 W
 Luminous flux: 400 lm
 Colour temperature: 3000 K (warm white)
 Beam angle: 60° (directional)
 Rated lifetime: up to 35,000 hours
 Input voltage range: 85–265 V
How to use
Ensure the power to the luminaire is switched off before replacing the bulb. Insert the GU10 base into the fixture by aligning the pins and twisting until secure. Restore power and verify correct operation. The bulb is intended for use in fixtures compatible with GU10 lamps and should be installed in enclosed or open fittings according to the fixture manufacturer's instructions. Avoid handling the bulb with bare hands immediately after long operation to prevent contact with hot surfaces.
Usage recommendations
Use this Synergy21 GU10 4W 3000K bulb for localised warm lighting where a 60° beam provides sufficient coverage. For uniform ambient lighting across larger rooms, combine multiple bulbs or use complementary diffuse fixtures. Do not use with dimmers unless the dimmer and bulb are explicitly specified as compatible.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Fitting/cap type | GU10 |
| Bulb power | 4 W |
| Luminous flux | 400 lm |
| Light colour | Warm white |
| Colour temperature | 3000 K |
| Beam angle (max) | 60 ° |
| Bulb lifetime | 35000 h |
| Product colour | Aluminium, Grey |

### Technical details

| Feature | Value |
|---|---|
| Mean cycles between failures (MCBF) | 50000 |
| International Protection (IP) code | IP20 |
| Housing colour | Aluminium |
| Compliance certificates | RoHS |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.06 kg |
| Length | 52 mm |
| Diameter | 50 mm |

### Other features

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 50 |
| AC input voltage | 85-265 |
| Energy efficiency class (old) | A++ |

## FAQ

### How much does the LED bulb Synergy21 Retrofit GU10 4W 3000K cost, and is it available for purchase?

The price is 11.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 100 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 27.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Synergy21 products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Synergy21 service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: fitting/cap type, bulb power, luminous flux, colour temperature, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for LED bulb Synergy21 Retrofit GU10 4W 3000K?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/12099470/67638916_large.webp