This thermostatically controlled heated birdbath features a versatile mounting system with 3 different mounting options (deck, clamp, and ground). It heats only when necessary, costing just pennies a day to operate. The cord tucks away for warm weather use, hidden from sight. The powder coated finish will remain rust free for years. Installation is quick and easy. Tested to 20-degree F (28-degree C). One year limited warranty.