The US 1000 offers effective ultrasound therapy by generating deep ultrasonic waves within body tissues to treat pain, muscle spasms and joint stiffness. The portable unit comes as a complete kit with carrying case, AC adaptor, ultrasound gel and manual. Therapeutic ultrasound device that generates deep heat to effected area. Device must be used with ultrasound gel to conduct the ultrasound energy to the skin. Three power output settings. Output Frequency: 1.0 MHz +- 10%. Temporal Maximum Power: 4 W +- 20%. Output Intensity: Low 1.6 W, Medium 2.6W, High 4.6 W. Duty Cycle: Low 8%, Medium 14%, High 29% Output Mode: Pulse. Pulse Width: 8% 05 mS +- 10%. Repetition Rate: 150 Hz +- 10%. Timer Setting: 30 minutes with auto off.