Web Finger & Wrist Exerciser Red Light 7 Diameter Lamps Seasonal Disorder Humidity and Temperature for Use: 17170 Humidity and Temperature for Use: Humidity Five function display indicates exercise time revolution count revolutions per minute (rpm s) and calories burned * Scan feature alternately displays all measurements automatically * Ideal for leg and arm muscle exercising * Four anti slip rubber pads prevent sliding and protect surfaces * Resistance easily adjusted with tension screw * Button cell battery included * Completely assembled foldable design * Limited Lifetime Warranty * Small 7 DIAMETER * Red * Light * Flexion extension opposition and supination exercises can be performed using the exercise web * Resistance may be modified by adjusting the hand position depth of finger insertion or by moving to a different resistance (color) web *