Tens Unit Dual Channel 3 Mode w Timer Corded Massagers Left Slope * Designed to 10883 Left Slope * Designed to assist those recovering from hip replacement or leg fractures * Fits most toilets * Features a locking mechanism for added stability and support * Size: 15 W x 16 1 2 D x 5 3 4 H * Adds 5 1 2 to height of toilet * Weight Capacity: 300 Lbs Metal foot plates 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