Teleflex Hudson RCI Voldyne 2500 Incentive Spirometer for Breathing Exercise. Clean and in excellent condition. Was probably never used. Built-in handle. Dimensions are 7 1/4" tall x 6 1/2" wide x 2 1/2" deep plus 13 1/2" long flexible breathing tube. 

Indications for Use and Cautions:

This product is intended to be used by patients who are under the care or treatment of a physician or licensed healthcare professional. The intended environments for use include the home, hospitals and clinics.