Features: Easy?to?use，?Safe，Precise. Fully?submersible?heaters?work?in?any?position?(horizontal?or?vertical)?to?provide?optimum?aquarium?water?temperature. Safe?and?reliable?in?both?fresh?and?salt?water?aquariums! Temperature?range?between?65F?and?93F Sensitive?and?reliable?thermostat?maintains?uniform?temperature Includes?two?suction?cups?for?mounting Automatic?shut?off?when?the?temperature?is?reached. Shatterproof?glass Plastic?cover?protector?(removable) Specifications: Type:?50W Voltage:?220V?50Hz Diameter:?2.2cm/0.866?inch Length?of?power?cord:?82cm/2.69?feet Heater?Length:?18.5cm/7.28?inch(50W) Recommended?Tank?Size:?10?to?16?gallon(50W) Package?Included: 1?x?Digital?Thermometers?(US?plug)