Note: Class Ii - Rx Required With The Powerful Rechargeable Lithium Ion Battery This Portable Device Can Be Used At Home At Work Or On The Go. The Intensity Select Combo Ii Is The Newest Standard In Portable Multifunction Electrotherapy Offering Patients Four (4) Modalities In One User-friendly Ergonomic Design - Transcutaneous Electrical Nerve Stimulation (tens) Neuromuscular Electrical Stimulation (nmes) Interferential Stimulation (if) And Russian (russ). The Wide-ranging Capability Of The Intensity Select Combo Ii Provides The Most Up-to-date Treatment Technology And Waveforms. Equipped With Pre-set Body Part Specific Settings As Well As A Customizable Option It Intuitively Guides The Patient Step-by-step To Ensure The Ideal Therapeutic Treatment Throughout The Healing Cycle. This Powerful Device Delivers Up To 10 000 Hz Of If Therapy With Sweep Frequency Capabilities To Prevent Accommodation While Providing Maximum Treatment Benefits. Simply Choose A Preset Program By Body Part Or Customize A Program To Meet Your Specific Therapy Needs. The Russian Setting Provides 2500hz For A Deeper And More Comfortable Stimulation Helping To Reduce Muscle Spasms As Well As Muscle Strengthening. Contraction And Relaxation Times Are Adjustable.