Wherever you are, at sea, on land, the rescueME PLB1 provides the reassurance that global emergency services can be alerted by the press of a button. The rescueMe PLB1 can be operated with a single hand in even the most challenging situations. A simple spring loaded flap covers the activation button preventing inadvertent use. As this is funded by governments there are NO CHARGES to use this service. When activated the rescueME PLB1 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. Dimensions: 2" H x 5" W x 7" L.