Specification:Dual use mineral water bottle / original cupCharging Time 2.5-3hOperating Time 3minCapacity 350MLReduction Potential (ORP) 0~ -500MVBattery capacity 3.7V/1000mAh (Built in)Operating mode Semi-automaticNumber of work (Fully charged) 15-20timesOperating voltage DC 5V 1APower4WProduction..