From Objecto, this heater features: Runs up to 8 hours Automatic Shutoff Safety feature: Automatic shutoff when unit is tipped over Lightweight and Portable Perfect for the office, home, gifting, etc. Acrylic Dimensions: 13" x 8" x 11" Imported. *Returns not accepted on any opened, used, or defective product. Contact manufacturer directly for further defective products/parts.