Mbody3 Plus product consists of following:
MShorts3 measuring data from quadriceps, adductors, hamstrings and gluteus muscles. 
Mbody Live3 is the mobile app (free of charge) for field monitoring with simple biofeedback data
Compatible with Muscle Monitor, PC software with versatile measurement, analysis, and feedback features (sold separately).
 
Note that you need the additionally MCell3 to monitor your muscles. MCell3 is not included in this price.