IsatPhone2, Inmarsat
This phone is light-weight. Phone calls are clear when I am at my fishing spot (approximately 100mi south of Pascagoula, MS in the Gulf of Mexico). Only complaint is that the phone takes quite a bit of time to connect to satellites, and it seems like the phone has trouble connecting if the boat is moving. That may be part of the deal with sat-phones. Not sure. I know that this phone works and I hope I never need it.