Lightweight and portable, it can be taken on board after twisting the breathing valve. Adopt aluminum material and meets the manufacturing standards for diving equipment.The 0.5L oxygen cylinder allows the diver to stay underwater for 5-10 minutes (depending on individual lung capacity and depth of diving), perfect for beginners. We offer you the best service with our greatest passion and enthusiasm, be pleasant with your shopping! The item "Mini 0.5L Scuba Tank Hand Pump Diving Oxygen Reserve Air Dive Equipment D3" is in sale since Sunday, May 2, 2021. This item is in the category "Sporting Goods\Scuba & Snorkelling\Cylinders & Tanks". The seller is "drewer224" and is located in Shenzhen. This item can be shipped worldwide.