Wooden Craftsmanship This modern ceiling fan is crafted from walnut with over 20 years of history, carefully hand-carved to show natural texture and a delicate touch. After hundreds of professional balancing adjustments, it ensures stable and silent rotation. Efficient DC Motor This 52 inch large ceiling fan has passed ETL certification and is equipped with a DC motor, which has a 75% efficiency improvement compared to traditional AC motors. In summer, high speed provides cool airflow, while in winter, reverse operation evenly distributes warm air in the room. Energy-saving and Environment-friendly 52" ceiling fan with no light consumes only 1 kWh per hour at maximum power and speed, which lasts for 21 hours. At the lowest speed and power, it only consumes 1 kWh per hour, which lasts for 200 hours.