Working Temperature Range: 140��F/60��C to 662��F/350��C Size: As shown Color: Black Blade Number: 5 Start Temperature: 140��F/60��C Material: Aluminum Noise Level: 25dB Speed: 1100rpm Package Includes: 1 Stove Fan with 5 Blades Features: This stove fan converts heat into energy, requiring no batteries or electricity. It operates efficiently within the temperature range of 140��F/60��C to 662��F/350��C, with faster spinning at higher temperatures. It circulates heat throughout the room quietly. Please Note: Do not exceed 662��F when using the fan. Allow 1-3cm error for manual measurements, and be aware of potential color variations due to different photo placements. We use high-quality materials for optimal user experience and aim to ship orders within three days of purchase, with estimated delivery in 8-15 days. Please check product dimensions to ensure they meet your needs. If you have any questions, feel free to reach out. Thank you for your purchase; we hope you enjoy your product!