Product Description Press the top button for 2 seconds to turn on the low pressure pump and press the short or long button again to turn off the low pressure pump. Starting work for the preset pressure will increase the pressure automatically to the maximum pressure, after reaching the maximum pressure, the machine will continue to work for 5 minutes to automatically turn off the machine, if the inflatable equipment is not full, you can start the machine again for 2 seconds. Press the middle button for 2 seconds to turn on the high pressure pump and press the short or long button again to turn off. Press the bottom button for 2 seconds to turn on the emergency light and press the short or long button again to turn it off. The power of the lighting emergency lamp is 0.5W, with about 50-80 lumens of brightness. Battery Capacity: 3.7V/3000mAh; Working time: low pressure pump works for about 60 minutes, high pressure pump works for about 90 minutes, high pressure pump and low pressure pump can not work at the same time. Low power alert function: turn on any key switch and the red light flashes when about 20% of power is left. Battery low power protection function: the charge below 3.0V will force the operation stop, the indicator flashes 5S off, at this time it is necessary to charge to wake the machine to work again. Charging tip function: Charging status indicator is red and full charge indicator is green. Charging time: about 2-3 hours; Low pressure pump maximum inflation pressure: 4500pa/120Kpa high pressure pump (about 20psi) Maximum air volume of low pressure pump: 350L/min high pressure pump 8L/min. Max Power: 15W Maximum noise 80-90dB Maximum vacuum -60Kpa