For this price you can even require no wonder device. It looks stylish. Capacity of 1.7 liters is also sufficient. He owns a small screen on the spout, whereby smaller scale deposits (which can occur in non-daily clean) remain in the digester. The cooking time with us is 4:30 min. (1.7 L cold water) A star deduction's nonetheless for too small opening. This allows the kettle to make poorly clean.
Conclusion: A good kettle at a fair price but with difficulties in the "inner" care