A Dawn of a New Era in AAD Technology. Vigil® sets new standards in design, engineering, and functionality of a life-saving device. Like any other AAD on the market, the purpose of the Vigil® Cuatro is to save lives. Why would Vigil® Cuatro become your Guardian Angel? Overall advantages: Quality: Unique patented time calculation ensures accurate activation. The patented cutter device (circular knife) cuts the reserve loop twice. Strong flexible connecting wires: easy to install in all rigs. Patented Pulse + element always ready to trigger the cutter. A very robust device. Cuatro: Four modes in one: Student, Expert, Tandem or Xtreme – all-in-one device. Schools and centers: the versatility of the 4 modes = cost-effective. Water Resistance: Vigil Cuatro is waterproof (IP68 rated; max. 1,8 meters for a maximum of 24 hours). No scheduled maintenance: Performs a self-check at every start-up. Life Expectancy: Max. 20 years life expectancy. Memory Features: Logbook with total number of jumps, overall free fall time, last free fall time, max speed of the last free fall, number of saves, atmospheric pressure, temperature… Information accessible through LCD. Black box function: Vigil retains last 16 minutes of freefall and creates 16 graphs containing all jump information that can be downloaded through an Infra Red download box. See support/manuals page for the Manual vigil download box. User Friendly: Alpha numeric display for ease of use and communication. Cutter & controller are field-replaceable. Cost: A competitive price and a low cost of ownership