The Scuba diving ventilator will compress air into the tube underwater to provide enough fresh air for your underwater journey. Withwhich you don't need to carry a heavy scuba cylinder or scuba tank, you will move more freely underwater and dive longer..TThe diving system is only 11.5 lb, it is easy to carry when you go outside for diving. The diving time is related to the remaining power. It usually can last for 5,5 hours of continuous underwater use when fully charged within AC 100v-240V voltage.Diving System included: product host, extended intake pipe, breathing hose, strap, charger, filter cotton, activated carbon bag and user's manual. We provide a six-month warranty for each product, If you have any questions, please contact us in time.Wide Usage: Scuba diving and snorkeling, underwater exploration. Perfect for traveling. Take diving air pump with you to explore beautiful underwater world and enjoy your diving trip.Please note: Using the system on the water . After using in the sea, please rinse the machine with fresh water to avoid salt water corrosion.