Stella BIO is a 4+2 channel sensitive electromyograph (EMG) with implemented electrostimulation. Stellla BIO provides 4 main functions: (1) EMG-triggered functional electrical stimulation (EMG-FES & FES), (2) Electrical muscle stimulation (EMS), (3) EMG measurements and biofeedback & (4) TENS. Also Stella BIO is equipped with interactive games which could enhance voluntary movement, making patients more aware of muscle activity, help to control movement and train functional tasks.