It is not only just a portable air pump, but also can act as a power bank and flashlight in case of emergency Built-in 2pcs 2000mAh batteries (totally 4000mAh), it can be used as a power bank to charge mobile phones When fully charged, it can charge 2~3pcs 195 65R15 tires With LED lighting function, you can easily inflate at night It has four preset inflation modes and a limited default range of air pressure to prevent over-inflation and is very safe to use Specification: Product size: 48*85*137mm Battery capacity: 2*2000mAh lithium battery Product power: 80W Working voltage: DC 7.4V Working current: ≤7A Maximum air pressure: 150psi Accuracy: ±1.5psi Air volume: 35L/min LED light lumen value: 20LM Noise: less than 85db Charging time: about 2~3h Usage time: 40min USB line voltage: 5V Air tube length: 200mm±10mm Function: Air inflation, flashlight, SOS light, power bank How to use the SOS light: press once for lighting, press twice for warning, press three times for rescue Unit: Bar, Psi, Kpa, Kgf/c㎡ Suitable vehicles: cars, electric vehicles, bicycles, balls