Stainless steel tube, not easy to damage. <br />Reliable circuits and high quality materials ensure heat output and keep aquarium water temperature stable. <br />Temperature indicator range is adjustable between 16°C ~ 32°C. Advanced design and double sealing insulation ensure safe operation. Automatically adjust the temperature, with a power indicator light, completely submersible. Using high-quality explosion proof glass, when heating, it will not burst when it get out of water and then get in water in an instant <br /><br />Material: Stainless steel <br />Color: Black <br />Power: 50W Temperature range: 16-32°C<br />Suction cup diameter: 3.5cm <br />50W: Length 22cm, diameter 2.2cm <br />50W suitable for aquarium 20-30CM, 50L <br /><br />Power: 100W Temperature range: 16-32°C<br />Suction cup diameter: 3.5cm  <br />100W: Length 35cm, diameter: 2.2cm <br />100W suitable for aquarium 40-60CM, 100L<br /><br />Power: 200W Temperature range: 16-32°C<br />Suction cup diameter: 3.5cm <br />200W: Length 35cm, diameter: 2.2cm <br />200W suitable for aquarium 80-100CM, 200L <br /><br />Note: This product is only suitable for freshwater. When the red light is on, it is powered for heating. <br />Warning: Do not pull out or remove the temperature adjustment knob of the heater. This product can not be half out of the water, it is need to be used fully in water!<br /><br />1 x Heating rod <br />1 x Universal adapter <br />2 x Suction cup<br />In color box<br /><img src="http://img6.eachbuyer.com/x9/p100/bw365_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw365_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw365_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw365_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw365_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw363_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw363_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw363_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw363_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw363_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw364_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw364_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw364_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw364_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/bw364_5.jpg" />