TENS, EMS, and heat functions provide relaxation and massage to overworked muscles Three usage options include TENS/EMS + heat, only TENS, and only heat for tailored relief 64 pre-programmed applications and 6 customisable programs including frequency, pulse width, on/off, programmable time, and a countdown timer allow you to personalise the way you use the device Electrode positioning indicator lets you know when you have the electrodes placed correctly Two separately adjustable channels, adjustable intensity, and high and low heat levels deliver targeted comfort to sore muscles Safety switch-off function delivers added peace of mind Includes 4 electrodes and 4 gel pads