Here are the key differences between the «White & Color Ambiance BT (GU10, 5.70 W, 350 lm, 2 x, G)» and the product listed on the Digitec link:

## Power Consumption and Lumen Output
- The product from the link consumes 4.2 watts and produces 400 lumens at 4000K, whereas the «White & Color Ambiance BT» consumes 5.7 watts and produces 350 lumens.

## Number of Bulbs
- The Digitec link offers 3 bulbs, while the «White & Color Ambiance BT» comes with 2 bulbs.

## Price and Value
- The product on the Digitec link appears to be cheaper despite including one more bulb.

## Lifespan
- Both products have a similar lifespan of 25,000 hours, but the newer model mentioned in the link has some technical improvements, including reduced power consumption and a slightly adapted diffuser.

## Full Color Control via Hue Bridge
- Both products support full color control via the Hue Bridge, as they are part of the White and Color Ambiance range, which offers millions of colors and is compatible with the Hue ecosystem.

### Reasons to Pick the Newer Version
- Energy Efficiency: The newer model consumes less power (4.2 watts vs 5.7 watts) and has a more efficient energy profile.
- Brightness: It offers higher lumen output (400 lumens vs 350 lumens).
- Additional Bulb: You get one more bulb for a potentially lower price.
- Technical Improvements: The newer model has a slightly adapted diffuser and improved energy efficiency, which could be beneficial in the long run.

Given these points, the newer version seems to offer better value in terms of energy efficiency, brightness, and the number of bulbs included. However, if you are specifically looking for the exact specifications of the «White & Color Ambiance BT» and do not need the additional improvements, that might still be a viable option.