Not bad, but somewhat inaccurate temperature control and heating quite low.

Relatively durable and well equipped. The connection cable and the terms are easy to remove if necessary.
The heat is long-term as opposed to a hot-water bottle and relatively constant available ohnen the first somewhat more complicated, the water needs to be heated.

However, the electronic control is measured with a good Strommessmeßgerät quite inaccurate and vacillating.

This means that the really high 100 watts input power maximum of a few seconds in stage 3 are available and then to a maximum of about 45 watts, down unsteadily, sloping. In the lower two stages even less power to so is to take place a maximum heat preservation held useful heating here.
In all stages, the input power is very uneven.

I compare for instance with a our disposal standing neck heating from the same producer with other electronics part, 6 switching stages and 100 watts Quick heating, falls directly the perfectly uniform flow control in the switching stages at which the real 100 watts at the highest shift stage longer available.

Important are the switch-off and overheating protection. Operation with more than 3 switching stages with beleucheten digits is otherwise simple and good.

Would the rules more closely, turn the temperature control constant and warmer, there were 5 stars.