Push Pull Muscle Strength Dyn. Digital 500 Lb. Blood Pressure Monitor SpO2 error is ±4% 7344301 SpO2 error is ±4% Integrated side air bolsters with foot pillow * Includes: SelectAir pump mattress with foot pillow zippered cover with foot pillow and 1 foam pad * Weight: 19 lbs 8 DIGITAL (LCD) READOUT * 500 lb * The heavy duty dynamometer features the hydraulic system that is used in the industry accepted Baseline© and Jamar© hand dynamometers and pinch gauges * Hydraulic system ensures accurate readings * The dynamometer is much lighter (1 force capacity unit * Comes with 3 push pads (padded curved padded straight and 1cm2 circular) 1 pull hook and 1 snap lock hook * Comes in cushioned carrying case with muscle heat test manual * 1 Year Warranty * CE certified *