Inflation pressure: maximum inflation pressure of low-pressure pump 4500pa/high-pressure pump 20PSI Air volume: The maximum air volume of the low-pressure pump is 350L/Min, and the high-pressure pump is 8L/Min Battery capacity: 3.7V/3000mAh Charging time: approximately 2-3 hours Working time: The low-pressure pump works for about 60 minutes in gear 1, the low-pressure pump works for about 35 minutes in gear 2, and the high-pressure pump works for about 90 minutes. (High pressure pump and low pressure pump cannot work simultaneously) Maximum power:15W Maximum noise:80-90dB Maximum vacuum degree:less than equal -60Kpa Power cord length:30cm Power supply type:USB charging (type c port) Voltage:5V Current:2A Inflatable tube length:4.5cm Instructions for use: Long press and hold the first button for 2 seconds to turn on the first gear of the low-pressure pump. Short press and hold again to switch to the second gear of the low-pressure pump. Short press or hold again to turn off the low-pressure pump. The indicator light will turn blue during operation. The first gear is in automatic mode, and when it reaches the preset pressure, it will automatically increase to the maximum pressure. After reaching the maximum pressure, the machine will continue to work for 5 minutes and automatically shut down; The second gear is for high flow and high pressure. After opening the second gear, the machine operates at maximum speed and automatically shuts down after 5 minutes. If the inflated equipment is not fully charged, you can press and hold for 2 seconds again to start the machine and continue working. Colour:Black Material:Plastic Package Contents: 1 * Electric Inflation Pump Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.