EPIRB/PLB Battery Replacement Service For: 2775 Sat2 406™ Cat 2, Class 1 Includes: 1096 Battery, Parts, Labor Programming service requires that we have the vessel"s MMSI number. The vessel name may also be programmed into the unit; please provide this if desired. International agreements dictate that EPIRB"s must be programmed for the country under the flag of which a vessel sails or of which the vessel owner is a resident in order to register the beacon with that country"s SAR authorities.