All Air Pumps Fitted with UK 3pin Plug & Recommended for Use withAir stone, Long stones And Air wallsAll Air Powered Filters E.G. Sponge Filters, Box Filters and under Gravel FiltersAll Air Ornaments E.G. Bubble Device, Water Wheel, Star Fish Etc.5 Sizes to Choose FromResun Surpass Air-4000 Air Pump VOLT. ：100~120V 220~240V FREQ. ：50/60Hz POWER：4W AIR FLOW：320 L / Hr 84GPH PRESSURE： ≥0.016Mpa AIR FLOW ADJUSTER：YES