Specifications:Name: 0.5L Portable Mini Oxygen CylinderAir Oxygen Tank Breath DivingBreathing Oxygen CylinderCapacity: 0.5LMaterial: Aviation aluminumOxygen cylinder weight: 1040gOxygen cylinder dimension : φ6×35.5cm (2.4×14")Air capacity: 3.0 Cu.Ft / 85 LittersMax. pressure: 3000PSI / 200bar / 20MPaMax. dwell time underwater: 10minNumber of underwater max. breathing: 21 times(depending on individual lung capacity and depth of diving)
 Aqualung Rotary Union--Size: 6×2.5×14cm(2.4×1×5.5")--Color: Black--Function: Connect the respirator and the large bottle of oxygen cylinder, and deliver the gas in the oxygen cylinder to the respirator, which is convenient and efficient. Open the pressure relief valve after inflation.
 Oxygen Cylinder Storage Bag--Material: 600D Oxford Cloth--Size: 6×36cm (2.4×14.2")--Color: Green
 Feature
- Fitted with an ergonomic silicone mouthpiece.
 - Press and hold the top to vent the pressure inside the bottle.

- Comes with a pressure gauge to show how much air is in the diving tank.
 - Lightweight and portable design, it can be taken on board after twisting the breathing valve.

- Uses aviation aluminum material and meets the manufacturing standards for diving equipment.
 - Supports 3 types of inflation: Manual high-pressure Inflatable pump, aqualung switch, electric inflator.

- The 0.5L oxygen cylinder allows the diver to stay 7 meters underwater for 6-10 minutes (depending on individual lung capacity and depth of diving), perfect for beginners.

Preventive Measure & Warning1.This product is suitable for recreational diving within 10 meters.Do not try to use it as air supply in deeper waters.
 2.This product is suitable for use in waters that above 10 degrees Celsius.
 3.Recommended maximum ascent speed is 15 metres per minute (the last 6 meters need to be 6 meters per minute).
 4.Do not carry products with signs of damage, leakage or undesirable performance.
 5.The maximum filling pressure of this product is 3000PSI, and it can not to use filled that gas with oxygen content greater than 40%.Please use clean and dry compressed air, do not expose products above 160 degrees Celsius environment or open fire.
 6.After filling the air, the pressure must be released first.
 7.Please practice in the shallow water area for the first time. The use of this product requires two or more people to accompany you.
 8.When the gauge pointer is close to the red area, stop diving. It must be inflated before it can be used again.
 9.Store the product in a cool, dry place, avoid direct sunlight, car luggage, or extreme temperatures.
 10.This product is a high precision product, please do not disassemble and assemble this product at will.Untrained optional disassembly of this product may cause damage to the product.
 Package included:1 x Oxygen Cylinder 1 x Mouthpiece1 x Aqualung Rotary Union1 x Storage Bag1 x User Manual