Fangrui Product Details 20psi High Pressure: Powerful High-pressure Air Pump Designed For Quickly Inflating Sup Paddle Boards, Inflatable Boats, Airbeds. It Can Inflate Up To 20 Psi, Ensuring That Your Items Are Inflated To The Correct Pressure Level For Optimal Performance 20psi Negative Pressure: This Pump Can Make 20psi Negative Pressure, Which Help You Deflate The Inflatables More Quickly. And It Comes With The Vacuum Adaptor Nozzle Compatible With Most Mainstream Vacuum Storage Bags, Allowing It To Be Used To Extract Air From Vacuum Storage Bags. Low Pressure With Large Air Flow: The Air Pump Has Low Pressure Mode With Two Gears Of Air Flow And Comes With Different Adaptor Nozzles, Suitable For Various Inflatables. The 1st Gear Air Flow: Fits For Air Mattress, Beds, Pool Floats And Swimming Rings;the 2nd Gear: Fits For Balls, Balloons. 3000mah Large Capacity Battery: This Large Battery Can Provide Long Using Time After Full . 90 Minutes High Pressure Working Time, 60 Minutes Low Pressure 1st Gear Working Time, 35 Mins Low