AirRelax LGT-2200DVT is designed to decrease the risk of Deep Venous Thrombosis (DVT) and Pulmonary Embolism (PE) with calf and foot compression. This device provides patient with effective and comfort treatment experience. It also contains a battery, which makes the device suit for more situations such as when the patient is in transit or a power cut period. Specification: Pressure range: 40-190 mmHg Time range: 1 min- 99 hours Gradient pressure setting Interface: Touch screen Chamber: 3 Inflation mode: 4 Weight: 2.5 kg Power: 40W, AC 110/220V 50-60 Hz