Carbonflex Electrodes Silicone Insulated Diam 4 Blk Orthopedic Care For Oversize * Foam Filled 10 LL 100 For Oversize * Foam Filled Terry With Pocket * Shipping Carton Size: 18 L x 16 W x 4 H 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 4 Round Black * Note: The hard rubber electrodes are now softer silicone electrodes * The new silicone electrodes are of the same high quality and have very low resistance and they are more suited to the body * Uniform conductivity conserves energy and improves performance of equipment