Speed, frequency, amplitude and temperature are also controllable.
It has a small screen on the top which plays films for the user to help them with the extraction process.

The director of the urology department at Zhengzhou Central Hospital said the machine was being used by infertility patients who are finding it difficult to retrieve sperm the old fashioned way.
A website which is selling the machine for $2,800 promoting it stating 'it can give patients very comfortable feeling.'