Switch battery-powered air pump, used once, for a few hours. The tube length is approximately 50cm. Used for transporting live fish, shrimp, etc., and for fishing. Operation has been confirmed. Two used size D batteries are included (may differ from the photo). If you have any issues, please contact me before leaving feedback, and I will respond sincerely, so please feel at ease. Will not be sold separately. No discounts. Thank you.