Since the batteries are included, you can immediately start treatment. But wait! previously you should definitely read through the manual carefully, because there are firstly areas which should not be treated and secondly exceptions, that certain medical conditions that preclude treatment.
If there is a green light, you can start. The treatment lasts no longer than 15 minutes and the strength (1 - 5) you can adjust itself. My husband has tested strength 3 and because you feel quite a bit. He felt a vibration and muscular responses, but in a pleasant Art.Ob it really helps to relieve tension, I now can not say, since we have no problems at the moment luckily images this regard. A pleasant massage is definitely.
The manual is very detailed and it will be good described.