Tens Unit Dual Channel 3 Mode w Timer Corded Massagers 3 Piece Kit includes Hydraulic Undercast Padding 3 Piece Kit includes Hydraulic hand dynamometer 50 pound Hydraulic pinch gauge and 6 Finger goniometer * All instruments are housed in a convenient carrying case * Shipping Carton Size: 16 L x 14 W x 12 H Knee Hi * Expresso * 30 40 mmHg * Small * Ankle Circ 7 8 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