Features: 1. Simulate the design of natural ecosystems.2. Built-in overheat protection device, safe and reliable.3. Decomposition and discharge of fine particles of organic matter such as proteins.4. Easy to disassemble and install.5. Integrated design, a number of patented technologies. The main body of the product is made of plexiglass tubes and manufactured by Seiko. It is transparent and easy to clean. Simulate nature's ecosystem design. The use of permanent-magnet synchronous motor driven water pump, high efficiency and long service life, built-in thermal protection device, safe and reliable. Protein and other organic macromolecule wastes have good separation and discharge efficiency and high dissolved oxygenModel Number: WG-308Voltage: 220-240V Frequency: 50HZ Power: 6W Size: about 117*85*260mm -------------------------------------------------- ------------------------------------- Model Number: WG-310 Voltage: 220-240V Frequency: 50HZ Power: 8W Size: about 117*85*290mm