Characteristics of use: -continuous electric power-generating and power-switching to ensure that fish tanks are kept in a state of gas-fighting, are not afraid of temporary power cuts or outages without warning, typhoons are out of power, avoiding only fish casualties. -indirect use for up to 40 hours and continuous use for up to 16 hours. -special muffler technology is adopted in-house, and the outer shell thicken abs plastic material is soundproof. -the shell is designed to display/bee-buzz alert and is clearly charged/operated. -have the function of charging and memory power outage while working, power outage can restore the original mode of work. 6.Usb interface, using light touch switch, dc plug add waterproof cap, greatly enhance waterproof performance. -dual-use alternating current, with a wide power supply adapter, which does not require off-charge. when power is out of power, switch the battery power automatically, so that the inflator can be activated at any time. -can also be used for outdoor mining, fish transport, fishing bait bucket air pump, a machine multi-purpose, more convenient to use.