VIVOSUN - Calentador de acuario sumergible de titanio, 300 W, con indicador de temperatura LED inteligente y controlador de temperatura externoPRECISE TEMPERATURE CONTROL: An intelligent IC chip controls the heater temperature, making the temperature difference within 1 2F; Provide the best living environment for your aquatic creatures SAFETY GUARANTEE: Made with IP68, the highest waterproof level; and a titanium tube material that features explosion proof and anti corrosion engineering, which makes this submersible heater more resistant to damage while heating better than traditional glass