Note about the air pump: (1) Each indicator light represents 20% power, when the indicator light is not on, it means the air pump has less than 5% power and should be charged in time. (2) Press the blue button twice to turn on and once to turn off. (3) Select only one suitable nozzle at a time. (4) Inflation: Install the appropriate nozzle to the inflation port and connect it to the product, then turn on the air pump to start inflation. (5) Exhaust: Install a suitable nozzle in the exhaust port and connect it to the product, then turn on the air pump to start exhausting. Please do not leave the pump fully discharged for long periods of time and recharge it at least once a month during storage.