Feature: 1. High Pressure Resistant: Oxygen cylinder is made of aluminum alloy with multi layer treatment, corrosion resistance and high pressure resistance. 2. Pressure Gauge and Relief Valve: The luminous gauge can be seen at a glance from the depth. Press the pressure relief valve to release air and pressure. 3. Prevent Air Leakage: The hose fittings are made of food grade silica gel materials and imported rubber rings to effectively prevent air leakage. 4. 1L Capacity: Mini diving tank has a capacity of 1L and can breathe underwater for 15‑20 minutes, support about 132 breathing times in water. 5. Professional Diving Gear Kit: All the parts of this underwater breathing kit meet the diving equipment manufacturing standards, lightweight and portable. Specification: Item Type: Scuba Tank Oxygen Cylinder Kit Material: Aluminum alloy, plastic, silicone Gross Weight: 3300g / 116.4oz Color: Green Oxygen Cylinder Specification: 1L Air Capacity: 200L (compressed air) Breathing Times: About 132 times can be breathed on the water surface Available Time: 15-20 minutes. Package List: 1 x Oxygen Cylinder1 x Breathing Head1 x Cylinder Bag1 x Manual1 x Diving Googles9 x Accessories1 x Adapter Note: 1.The picture may not reflect the actual color of the item due to differences between monitors.2. Delivery without oxygen.