A TENS unit, such as the InTENSity 10, is often recommended to be used for the relief of chronic intractable pain, acute post-traumatic pain, acute post-surgical pain, and arthritic pain, among other conditions. TENS Programs: Neck Waveform: Modulation Frequency (Hz): 60-100 Pulse Width (µs): 100-150 Shoulder Waveform: Pulse Rate Modulation Frequency (Hz): 80-100 Pulse Width (µs): 260 Mid-Back Waveform: Pulse Rate Modulation Frequency (Hz): 100-150 Pulse Width (µs): 100 Low-Back Waveform: Frequency Modulation Frequency (Hz): 50-80 Pulse Width (µs): 260 Elbow Waveform: Continuous Frequency (Hz): 100 Pulse Width (µs): 100 Wrist Waveform: Continuous Frequency (Hz): 100 Pulse Width (µs): 260 Hip Waveform: Pulse Rate Modulation Frequency (Hz): 100-150 Pulse Width (µs): 200 Knee Waveform: Pulse Rate Modulation Frequency (Hz): 120 Pulse Width (µs): 100-150 Ankle Waveform: Continuous Frequency (Hz): 100 Pulse Width (µs): 100 Foot Waveform: Continuous Frequency (Hz): 60-100 Pulse Width (µs): 100-160 Product Features: Wave Form: Mono-phase square pulse wave Pulse Rate: From 50 to 150 Hz Pulse Width: From 100 to 260µs microseconds Pulse Amplitude: Adjustable 0-105mA peak at 1000 ohms Channel: Dual, isolated between channels Power Supply: 9.0V Alkaline battery, type: 6LR61, or AC Adapter (100-240V) Weight: 0.28 lbs (With Battery) Timer: 15, 30, 60 minutes and continuous Electrode Detection Function: Amplitude level will be reset to 0mA when it reaches 12mA or greater and an open circuit at either channel is detected. Optimal electrode placement is about 2-3 inches apart. Dimensions: 4.5" x 2.55" x 0.9" 1 Year Manufacturer Warranty Package Includes Everything Needed To Begin Treatment Right Away: 1x InTENSity 10 unit 1x Pair of 45" Lead Wires 1x 9v Alkaline Longer-Lasting Battery AC Adapter 1x Pack of Four Self-Adhesive, Reusable Electrodes Instruction Manual Hard Carrying Case