Working voltage: DC 12V; Suitable for middle and small tyre; Can be used for empty tyre or half-empty tyre; Forbid using with water; High quality, exquisite workmanship, durable and portable; Small vibration and noise; With antivibration rubber feet pad; Measurement range: 1~100PSI pressure gage (high precision); Dial diameter: 4cm; With protection, it will automatically power off as the tyre is full inflation; 5~7 minutes can fully inflate an empty tyre; With 3 different air nipples: suitable for bicycle, motorcycle, ball, airbed etc.; Barometer: 100PSI