EXLs1 is an inertial sensor based on MEMS technology and wireless communication ( Bluetooth 2.1 ) designed for motion measurement, acquisition and transmission. It features a complete IMU sensor set with full axis gyroscope, accelerometer, magnetometer, vibration sensor, and temperature sensor. It is ideal to be used in the medical field as a wearable device for the analysis of body movements, including posture assessment, gait monitoring, rehabilitation, joint's biomechanics analysis, and activity monitoring. It is also suited for multimedia interactions and vibration analysis. The Bluetooth radio allows standard interfacing to a wide range of devices, including PC, Tablets, and Smartphones, without needing additional hardware so data can be transmitted wirelessly up to 10 meters. The built in Flash memory ( 1 GByte ) allows data to be logged and retrieved for later use.