Choose the desired tire pressure – the integrated memory function automatically takes over the last set value. Press start and place the battery bicycle pump on the valve. The current pressure will be displayed on the digital screen in either Bar or PSI. Once the target value is reached, the pumping process stops automatically, allowing you to continue riding with fully inflated tires. A single battery charge is sufficient for three tire inflations, ensuring you won’t run out of air while on the go. The included USB cable allows you to recharge the electric mini pump in about 25 minutes.