Features: 1. SMART THERMOSTATIC CONTROL – AUTO ON/OFFOur pond heater features a built-in intelligent thermostat that automatically activates below 41°F and shuts off over 131°F. It maintains a small ice-clear area for air movement while cutting power consumption by up to 50% compared to models without a thermostat. 2. STRONG 1000W HEATING CAPABILITYThis pond heater delivers fast, efficient heating power to keep your pond’s upper section open for oxygen exchange during harsh winters. With stable output and superior heat coverage, it thaws ice at double the speed and coverage area of lower-wattage models, perfect for most ponds and cold climates. 3. SAFE FOR FISH & ALL POND TYPESThe fish-friendly floating design creates a small hole to replace harmful fumes with oxygen, removing the need to heat the entire pond. Suitable for 50-500 gallons plastic, rubber, or liner ponds and saltwater ponds. The sealed structure prevents electrical leakage and protects your ornamental fish and water vegetation throughout the winter. 4. STURDY & RUST-PROOF CONSTRUCTIONMade from sturdy cast aluminum with a rust-inhibiting coating, our pond ice-thawer withstands severe cold and harsh weather. The solid shell ensures even heat distribution and long-term use without deformation or rust. 5. EASY TO USE – READY TO GOSimply place the heater in your pond and insert it into an outlet, without extra setup. Equipped with a long 10ft safety-tested power cord for flexible placement. The alert light lets you know when the unit is actively heating. Specifications: Product Dimensions: 7.2 x 2.6 x 2.6 inches Item Weight: 1.83 pounds Power: 500w Power cord length: 10 feet Practicality: Suitable for outdoor ponds, fish ponds and other water environments, or animal drinking troughs, to prevent freezing in winter and support the survival of animals and plant. Package Includes: Ice melter×1 note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you will not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color about the item.