Review on JOYTUTUS Cordless Tire Inflator - 6000mAh Rechargeable High Capacity Battery - Compact & Lightweight Air Compressor with Accurate LCD Display for Car, Bicycle, Balls, and More by Mike Larkin

This pump works as advertised. It pumps air much faster than other water bottle sized USB powered pumps I've bought. According to the spec sheet, the charger lasts longer, although I haven't been able to test that aspect. One small issue is that the battery gauge shows very low power when pumping, but returns relative to what I was expecting. to where the load was before I started pumping. Not a deal breaker, just would be nice if the battery gauge was reliable when pumping.