*selling because I did not end up needing them after surgery and can't return. The PlasmaFlow® is prescription only device intended to be an easy-to-use sequential compression system prescribed by a physician, for use in the home or clinical setting to help prevent the onset of DVT in patients by stimulating blood flow in the extremities by simulating muscle contractions. This device can be used to: aid in prevention of DVT; enhance blood circulation; diminish post-operative pain and swelling; reduce wound healing time; aid in the treatment and healing of stasis dermatitis, venous stasis, ulcers, arterial and diabetic leg ulcers, chronic venous insufficiency and reduction of edema in the lower limbs. Features: Long-lasting rechargeable battery. Up to 10 hours of use on one charge 2 Modes: Continuous inflation and Step-Up inflation technology which allows the unit to increase pressure in slower increments to 55mmHG 2 LCD screens to monitor usage and pressure Portable, lightweight, and tubeless