With its bright yellow case, you’ll always know where the DefibTech is in an emergency. Its durability, having been tested to US military standards, means that this product performs well even after the odd knock or two. Above all, the DefibTech Defibrillator is so easy to use with its audible prompts that even non-medically trained people can use it. This semi-automated defibrillator comes with a standard battery (approximate life 5 years).