Feature:1 Multi-function: sand washer, water changer, filter and suction fish waste. Meets the different needs of users. 2. Electric Aquarium Sand Washer: You can change the water, no plug, no distance is suppressed. 3. Ergonomic design: The ring on the handle side is comfortable and convenient to operate. 4. The telescopic structure allows you to freely adjust the length of the water changer which is convenient and practical according to the size of the fish tank. And the special buckle is stucked tight and will not fall off easily. 5. Easy Operation: Press the power switch to move it where you need it. As a water exchanger to suck dirty water Specifications: 2 Brand New Material: ABS Color: AS Pictured Battery: 2 x C batteries (not included) Flow Rate: 520L / H Assembly Size: Min: 41.5cm / 16.3in Max Length: 83.5cm / 32.9in Water Tube Length: Approx. 29.5in Weight: Approx. 288g Suitable Water Level: Minimum Water Level (Single Sand Filter Head) ) is 11cm. High water level is 62 cm. Package List: 1 * Motor 3 * Telescopic Tube 1 * Mesh Bag Connector 1 * Filter Mesh Bag 1 * Connector 1 * Sand Filter Head 1 * Hourglass Cup 1 * SiphonNote: 1 After installing the sand washing machine, change the water, and keep the water between the highest water level and lowest water level before you start the switch. When you can pull out the water outlet, you can raise the sand washer, and the head and water outlet will come out of the water. 2. The idle running time of machine from water is not less than a minute. 3. Battery improvement need to install according to the instructions, but can not be installed backwards. 4. Every time you wash the sand, you need to clean the filter bag in time.