You have just opened the mySmartMove box. It contains all the elements you will need to do your first analysis (except the tablet or the Android phone which are not provided)
Sensors. These capture all the characteristics of the movement you are about to analyze. These sensors are made by "xsens", the benchmark in terms of inertial sensors.
The gateway. As its name suggests, it is the link between the sensors and the web platform that will allow you to view the results of the analysis.
Velcro ties. The box contains 5: one for the belt, 2 for the thighs and 2 for the calves. Each has a small pocket for inserting the sensors. The sensors must have the "xsens" logo on the bottom, orange side outwards.