The ACR Electronics rescueMe PLB1 Personal Locator Beacon works with the only officially recognized worldwide dedicated search and rescue satellite network, operated by Cospas Sarsat. As this network gets funding from governments, this ACR PLB requires no subscription or ongoing charges for use. When activated, the ACR Electronics rescueMe PLB1 Personal Locator Beacon transmits your position and your ID to a Rescue Coordination Center via satellite link. Rescue services nearest to your are promptly notified of your emergency and regularly advised of your current location to assist prompt rescue. A built-in, high-brightness strobe light aids in visibility. The ACR rescueME fits easily in a life jacket and has a retractable antenna to improve signal. The 66-channel GPS receiver provides wide-ranging communication ability, and the battery boasts a 7-year lifespan and up to 24-hour operational life. Mfrs. 7-year limited warranty. Manufacturer model #: 730S-01261. Operates on the global Cospas Sarsat rescue system Free to use: No subscription charges Easily fits in a lifejacket Retractable antenna Up to 24-hour operational life 66-channel GPS High-brightness strobe light 7-year battery lifespan Mfrs. 7-year limited warranty