Whether you work with cyclists, triathletes, baseball players or other athletes, the Performance US Muscle Stimulator Kit allows you to customize your training program to enhance muscle performance in avid athletes. The Performance US Stimulator features 5 programs with 5 levels of progression used for physical preparation, muscle recovery and injury prevention. Help increase blood flood and oxygen to muscles using the low frequency Pre-Warm Up program before workouts or competitions. Choose from Endurance, Resistance or Strength programs to suit the particular needs of athletes. The Active Recovery? program reduces lactic acid buildup and promotes muscle relaxation for faster recovery, keeping your athletes in the game and exceeding your training expectations. Kit includes: Performance US Muscle Stimulator, Battery Charger, CD with User Manual, Electrode Placement Guidebook, Carrying Case, Easy Snap Electrode Lead Wires, 2? x 4? Easy Snap Gel Electrodes and 2? x 2? Easy Snap Gel Electrodes.