1、Inflated pressure is not allowed to be more than 3000 psi or 200 bar. 2、The respirator,cylinder and adapter are aluminum alloy constructed. 3、Food grade silicone bite valve of the respirator. 4、Easy and quick inflated by electric pump, hand pump or refilled by big cylinder. 5、0.5L air allows to stay within 10 meters of water for about 5-10 minutes. 6、PREMIUM QUALITY DIVING TANK - Both the cylinder and it\u0027s head made of aerospace aluminium alloys better resists internal corrosion and stands up well to ALL damage. Lixada cylinders are relatively small, yet very strong containers that hold large volumes of compressed gas. Make sure you get prepared on your next dive with one of our air tanks made from high-strength aluminium alloys. 7、PORTABLE SIZE FOR EASY CARRY - Lixada Scuba Oxygen Cylinder size:13.9 * 2.3inch, weight:1.4lb, small size makes it very easy for carry, lightweight\u0026durable.It will not add too much weight to your diving package.Great for diving entertainment, practice or training. 8、ALLOW STAYING IN WATER UP TO 10 MINUTES - Lixada Diving Tank is very easy to use, you simply palce the bite-mouthpiece into your mouth and you have hands free to swim underwater. 【0.5L AIR ALLOWS TO STAY UNDERWATER NO DEEPER THAN 10 METERS FOR ABOUT 5-10 MINUTES】. With 10 minutes capacity, you have no difficulty making your ascent to the surface or the boat. This dive tank can definately make your diving more enjoyablet. 9、SAFE TO USE - Food grade silicone mouthpiece on cylinder head, chemichal-free \u0026 100% healthy for using, it will not hurt your teeth or your kids\u0027 teeth on any situations, very safe for family to use. AND the silicone mouthpiece has a good bite feeling, it will not make your scuba uncomfortable! 10、3 WASY FOR QUICK INFLATION - 【1- By manual high pressure inflatable pump】 【2- electric inflator】 or 【3-refilled by a bigger cylinder】Specific Refillable Design saves the trouble of taking the device apart to fill your tank. Beside, Lixada Scuba Diving Equipment endows with a pressure gauge, so tank pressure can be easily read by your dive buddy. The luminescent face and color-coded pressure levels make for quick reading \u0026 utility for all diving situations. 11、★Inflated pressure is not allowed to be more than 3000 psi or 200 bar. 12、★The respirator,cylinder and adapter are aluminum alloy constructed. 13、★Food grade silicone bite valve of the respirator. 14、★Easy and quick inflated by electric pump, hand pump or refilled by big cylinder. 15、★0.5L air allows to stay within 10 meters of water for about 5-10 minutes. 0.5L air allows to stay within 10 meters of water for about 5-10 minutes. 3 ways for quick inflation: By manual high pressure inflatable pump, electric inflator or refilled by a big cylinder. Great for diving entertainment, practice or training. Feature: Inflated pressure is not allowed to be more than 3000 psi or 200 bar. The respirator,cylinder and adapter are aluminum alloy constructed. Food grade silicone bite valve of the respirator. Easy and quick inflated by electric pump, hand pump or refilled by big cylinder. 0.5L air allows to stay within 10 meters of water for about 5-10 minutes. Specification: Material: Aluminum alloy + Silicone Cylinder capacity: 0.5L Working temperature: >10°C (50°F) Package weight:  1666g / 3.6lb Package List: 1 * 0.5L Oxygen Cylinder 1 * Oxygen Cylinder Head 1 * Oxygen Refill Adapter 1 * Oxygen Cylinder Bag Warning: 1. Please do not use the product before reading the instruction and notes. 2. Do not try to use it as air supply in deeper water(more than 10 meters). 3. Do not fill the cylinder with oxygen content greater than 40%. 4. Store the product in a cool, dry place, avoid direct sunlight, do not put it in car trunk, and do not expose it above 160°C open fire. 1 * 0.5L Oxygen Cylinder 1 * Oxygen Cylinder Head 1 * Oxygen Refill Adapter 1 * Oxygen Cylinder Bag Warning: 1. Please do not use the product before reading the instruction and notes. 2. Do not try to use it as air supply in deeper water(more than 10 meters). 3. Do not fill the cylinder with oxygen content greater than 40%. 4. Store the product in a cool, dry place, avoid direct sunlight, do not put it in car trunk, and do not expose it above 160°C open fire.