The first mini air pump that supports pressurized start, allowing inflation directly at 100 psi; Only half the size of a palm, weighing approximately 133g, making it easy to carry while cycling; - Preset tire pressure, automatic inflation and stop, supports real-time tire pressure detection; - Maximum pressure of 120 psi, can inflate a 700*23c road tire to 80 psi in about 50 seconds; - Battery life far exceeds other mini pump products, can inflate 5 pieces of 700*23c road tires on a full charge; - Automatically records the last set tire pressure value for convenience in future use; - Equipped with both American and French valve interfaces and a needle, meeting diverse inflation needs for bicycles, electric vehicles, balls, toys, etc. SPECIFICATONS Model E1-V5 Product Size 77.6X50X30.5mm Rated Voltage 7.4V Charging Voltage 5V - 1.5A Battery Capacity 2*750mAh Charging Model Type C Max Pressure 120 PSI