【Product Description】 - Brand: Hapyson - Model Number: YH707B - Included: Hose, air stone - Battery Life (when using alkaline batteries): Approximately 65 hours of continuous use - Airflow: Approximately 0.45L/min - Size: Approximately 80 x 50 x 120mm - Body Weight (including batteries): Approximately 300g - Motor Life: Approximately 1000 hours - Batteries Used: 1 x D-cell battery - Splash-proof design Ideal for keeping live horse mackerel, shrimp, and decoy ayu. An eco-friendly model that runs for 65 hours on a single D-cell battery. Thank you for viewing. I am selling this because I no longer use it. I purchased it new and used it about 3 times. There are some minor scratches from use, but it is generally in good condition. Operation has been confirmed. (Batteries are not included) Thank you.