TheTacxtrainerBlueTwisthasa flywheelthatweighs one kilo and is brakedvia eightmagnets.

 

 

It’s possible to selectthe drag forceon 7 positions,witha maximum resistanceof up to700watts of power. The selection ofresistance levelsis done directlyon themagnetic brake. It's compatible with wheelsup to 29inches.It has alist price ofapproximately 145 Euro.