Christstollen: Stiftung Warentest selects the cheapest as the test winner

Warentest checks 10 current tablets – and prefers to recommend older devices

Warentest checks Smartwatches: Even without Ultra, the Apple Watch outperforms everyone

Warentest checks power meters – it’s that easy to track down power guzzlers

Warentest checks wiping and vacuum robots – “good” devices are already available for 300 euros

The best smartphone: comparison test by Stiftung Warentest

Stiftung Warentest checks Christmas stollen: under 10 euros there’s the test winner

Stiftung Warentest: Real wild shopping

Headphones: Stiftung Warentest selects the best models in each category

Fully automatic coffee machines at Stiftung Warentest: Expensive does not mean better