The Dive 1st Aid AED and Oxygen Medical Kit comes complete with an AED and Jumbo D oxygen tank providing approximately 40 minutes of emergency oxygen at 15lpm. Packed in a SEAHORSE© SE920 roller case with foam padding, a hard plastic shell and a watertight seal, this kit is completely protected from any environment. With this kit you will feel confident you can handle any major life threatening medical emergencies you encounter, and at the same time ensure the best possible outcomes.