The Beurer EM 50 massager offers menstrual relaxation without drugs, thanks to the technology of transcutaneous electrical nerve stimulation (TENS) it has, thus providing relief from the pain of menstruation or endometriosis. The device has several massage programs, a heating function, 15 TENS intensity levels, comes with a rechargeable battery (320 mAh), and automatically switches off after the ideal operating time of 20 minutes.