1、Multi-functional: sand washer, water changer, filter and suction fish waste. It will meet various needs of the user. 2、Electric aquarium sand washer: free to change water, no plug require, no distance restrain. 3、Ergonomic design: the rings on handle side are comfortable and convenient to operate. 4、Telescopic structure, according to the size of the fish tank, can freely adjust the length of the water changer, convenient and practical. And the special buckle will firmly stuck and not easily fall off. 5、Simple Operation: press the power switch, so you can move it to anywhere you need, easy to suck up fish waste and fish tank filth. As a water exchanger for suction the dirty water. Features: 1. Multi-functional: sand washer, water changer, filter and suction fish waste. It will meet various needs of the user.  2. Electric aquarium sand washer: free to change water, no plug require, no distance restrain.  3. Ergonomic design: the rings on handle side are comfortable and convenient to operate.  4. Telescopic structure, according to the size of the fish tank, can freely adjust the length of the water changer, convenient and practical. And the special buckle will firmly stuck and not easily fall off.  5. Simple Operation: press the power switch, so you can move it to anywhere you need, easy to suck up fish waste and fish tank filth. As a water exchanger for suction the dirty water.  Specification: Condition:100% Brand New Material: ABS Color: As Pictures Shown Battery: 2 * C Batteries(Not Included) Flow rate: 520L/ h Assembly Size:  Shortest: 41.5cm/ 16.3in  longest: 83.5cm/ 32.9in Water Changing Tube Length: approx.75cm/ 29.5in Weight: Approx.288g Suitable Water Level:  the lowest water level(single sand filter head) is 11cm the highest water level is 62cm.     Package list:  1 * Motor 3 * Telescopic Tubes 1 * Mesh Bag Connector  1 * Filter Mesh Bag 1 * Connector  1 * Sand Filter Head  1 * Sand Washer Cup  1 * Siphon  Note:  1. After finished installation of the sand washer and about to change water, be sure to keep the water surface between the highest water level and the lowest water level before starting the switch. When the water outlet can be drawn out, the sand washer can be raised, the head and the water outlet will be out of the water. 2. The idle running time of machine out of water should not more than one minute. 3. Battery improvisation should be installed in accordance with the instructions, can not be installed backwards. 4. After each time sand washing, the filter bag should be cleaned in time.