Run time operation on fully-charged battery for approximately 3 hours at maximum vacuum. -25 to 550mmHg vacuum range, coupled with greater than 30 lpm flow rate at open flow, provides powerful suction for faster aspiration. Fully chargeable in 8 hours. Will run at full performance on AC power even with a low battery. Long-life rechargeable battery eliminates the need for frequent replacement. Sealed water-resistant unit is easy to clean, and minimizes potential contamination or damage to the compressor and battery. Control panel at an angle for easy viewing. Quality-engineered thermoplastic provides impact resistance and durability. 3-year warranty on the unit and 1 year on the battery.