Features: Model DWSP Light weight portable suction Unit that can be powered by one hand. Designed to provide simple operation and maintenance. Adjustable Stroke Know will provide different suction pressures. TECHNICAL SPECIFICATIONS: -Vacuum after 1 minute at 20kPA Vacuum: ≥ 15 kPA -Vacuum after 6 times suction: ≥ 20 kPA -Max Vacuum : ≥ 39.9 kPa -Disposable Container Volume : 300ml -External Diameter of Cap (Suction Port): 17mm -External Diameter of catheter connection: 17mm and 9mm -Stroke Adjustment: Turn to 50% or 100% -Operating Environmental temperature: – 20°C to 50°C -Storage Environmental temperature:  – 40°C to 60°C -Height of Container and external diameter of bottom: 130mm and 70mm -Net Weight: 230 grams