Large diameter rubber-suction, with strong suction, strong practicability and durability. Softer, more antioxidant, and strong adsorption. Pressure gauge design, visible pressure changes, stable airpressure without slipping. One click operation. Real time monitoring of airpressure, intelligent automatic replenishment throughout the process, more reassuring. Large capacity battery for long working time. Real time display of battery level is more reassuring., Manufacturer: ZKLGS