Multiple inflation methods, compatible with manual high pressure pump or with diving switch adapter. Material: Aluminum alloy + Silicone.Time: 30 times (2.5 liters each time). From the large oxygen bottle. Do not use this article before reading and understanding the instructions and notes. This product is suitable for recreational scuba gas source within 10 meters. Do not try to use it as a gas source in deeper water. Before using this product, it is strongly recommended that you be trained or certified by a recognized certification body in diving technology. The use of this breathing apparatus by non-certified or trained personnel is dangerous and may cause serious injury or death. The item "Underwater Breath Mini Air Oxygen Tank Scuba Diving Snorkeling Equipment a19" is in sale since Thursday, November 26, 2020. This item is in the category "Sporting Goods\Water Sports\Scuba & Snorkeling\Snorkels & Sets". The seller is "drase-store" and is located in Shenzhen. This item can be shipped worldwide.