Feature: 1. Safe and Efficient: Aquarium heater adopts high purity electric nickel wire, with explosion proof and anti corrosion quartz tube, energy saving and efficient and safer. 2. Fast Heating: Submersible thermostat heater external temperature control, over temperature protection, wave poly heating, power saving, fast heating. 3. Intelligent Chip: Digital display aquarium heater adopts intelligent chip, PID temperature control algorithm, ultra low water level, precise temperature control. 4. Anti Dry Burn: Fish tank submersible heater off water power off, anti dry burn, top dual sensing temperature probe, instant power off when leaving the water surface. 5. Portable Design: The fish tank heater is compact and portable with automatic thermostat, suitable for most small fish tanks, turtle tanks and aquariums. Specification: Item Type: Aquarium Heater Material: Plastic. Package List: 1 x Aquarium Heater