FLEXTAIL's 4-in-1 electric air pump - MAX PUMP 2 PRO. Easily reaches 300L/min of inflation airflow and up to 4.5kPa of inflation pressure with its tiny size. Size: 1.9 x 1.9 x 3 inches Weight: 160g(5.6oz) Battery Capacity: 13.32Wh Waterproof Level: IP55 Inflation Pressure: 4.5 / 2.5 kPa Deflation Pressure: -4.5 / -2.5 kPa Flow: 300-150 L/min Running Time: MAX 60min Brightness: 50-500 Lumen Running Time: 12-72 hrs