Security, Safety and Surveillance Products Design Oxygensure Rescue Bottle with Oxygen Cylinder by Jianing Dong In order to help the trapped persons who have fallen into the water to survive and escape smoothly, and reduce casualties after falling into the water, this product integrates the functions of broken window rescue and oxygen inhalation. This product uses a more portable size to facilitate multiple scenes when going out, and at the same time is equipped with an air pressure reminder device and a pressure relief device.