Package Includes: Device Batteries Lead Wires 1 Pack Of 4 Electrodes Carrying Case And Users Manual The Ustim Offers 12 Different Modes Which Allows It To Treat A Wide Spectrum Of Injuries Belt Clip Indications: Muscle Soreness Muscle Stiffness Arthritis Body Pain Post-op Pain Post-traumatic Acute Pain And Chronic Pain Ems Stimulator U Stim With 12 Modes Is A Dual Channel Device For Muscle Exercise And Treatment Of Physical Injury This Electrotherapy Equipment Has 12 Modes Of Operation That Are User Friendly And Written In Practical Terms The Neuromuscular Stimulator Has Two Wave Forms And A Large Lcd Screen The Interferential Unit Is By Far One Of The Best Portable Ems Unit On The Market A Prescription From Your Physician Or Physical Therapist Is Required For This Device Specifications: Model : Ustim Channel : Dual Output : Maximum 120ma (peak Value) Across 500 Ohm Load Pulse Width : From 50microsecond To 400microsecond In Steps Of 50microsecond Pulse Rate : From 1 Hz To 150hz Adjustable Waveform : Symmetrical Bi-phasic Rectangular:::alternately Bi-phasic Rectangular Program : 21 Programs Are Available 5-year Warranty.