solar water heater tank: capacity:100-500L stainless steel tank magnessium anode Warranty:3 years for inner tank and 1 year solar water heater tank: Capacity: 80,100,150,200,250,300,400,500LVoltage/Frequency:220-240V~/50HzMax.Pressure:6 Barstainless steel tankMagnesium anodeVertical mountingWarranty:3 years for inner tank and 1 year for product solar water heater tank