Marine Premium Water Heater have toxic free ceramic inside coating to ensure highest water quality over time. Fixed port connections BSP 1/2″. Heats up 45 l water in 2 hours, good for 65 l of mixed mixed warm water or a 6,5 minute shower. Operation with 850 W, 230 V. Dimensions: 663 x 390 x 390 mm. Volume: 45 l. Weight: 15 kg.