The Beurer EM49 Digital 3-in-1 EMS/TENS device has 64 pre-programmed applications. It also includes 6 customisable programs that allow you to adjust the frequency, pulse width, and on/off time. Features: • Pain therapy (TENS) • Muscle stimulation (EMS) • Relaxation and massage • Electrode positioning indicator • Includes 4 self-adhesive gel electrodes (45 × 45 mm) • 2 separately adjustable channels • 64 pre-programmed applications • 6 customisable programs: frequency, pulse width, and on/off time programmable • Adjustable intensity • Countdown timer • Safety switch-off • Doctor's function for perfect coordination with your personal treatment programme • Inverse LCasa Domani display with blue backlight • 5-year warranty • German design & engineering