Adjustable temperature：between 20 to 35 degree. External desigh, work together with filter bucket. Automatically Power off when no water flow insid. Power:300w/500w. Voltage: 220-240V 50Hz. Imported from USA (Sizes & Specifications are based on the USA Market). Size:EH-500W Feature: Power:300w/500w Voltage: 220-240V 50Hz LCD display Adjustable temperature：between 20 to 35 degree External desigh, work together with filter bucket Automatically Power off when no water flow insid Note: Please connect the heater on the ourflow tube of the filter bucket Direction of the arrow on the heater should be same with the direction of water flo Package includes: 1 x Heater 2 x17mm adatper for inner diameter 16mm water hose 2 x 22mm adapter for inner diameter 20mm water hose