Jobst® Relief® Knee High Compression Stockings, Large, 1 Pair Electrotherapy System includes device lead wires Style:1 Pair (Left & Right) System includes device lead wires four self adhesive reusable electrodes 9V battery hard plastic carrying case and instruction manual * 3 Modes: Standard Modulate and Burst * Dual Channel * 30 and 60 minutes or continuous timer * Adjustable Pulse Width: 50 250 Microseconds * Pulse Rate: 2 150 Hz * Pulse Amplitude: 0 80 mA each channel * Waveform: Asymmetrical biphasic square pulse * One year warranty * FDA approved Lightweight aluminum construction (only 20 lb) 12 rear wheels for better performance on uneven surfaces Companion activated hand brakes are ideal for locking the rear wheels during transfers Flared handles and handy back release hinge allow the back to fold down flat and compact for easy storage and transport Powder coated aluminum frame is lightweight and durable Padded full length permanent armrests Padded nylon upholstery is comfortable lightweight and easy to clean Seat belt for added safety Nylon seat straps allow for ease of folding and lifting Composite wheels with solid rubber tires are lightweight and maintenance free Tool free swing away composite footrests with heel loops included HCPCS Code: E1038* Length greater than 15 inches 20 to 30 mmHg compression rate