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The SPOT does not send a text message. It sends an email, that says OK, or HELP.This is all the message you get. It also sends the HELP message as a text message to phone #s you have put in it. In addition it gives the location, ( Lat. and Lon.) with a link to a google map that will show your exact location. The OK and HELP messages are unlimited. You can send a hundred a day if you like. They also have a track feature, which is an option, but my understanding is that it is not currently in operation. Still not real sure how this feature works, but apparently it will show your boats position over a period of time. This still seems to me like a pretty good deal. They also have an insurance deal, that will pay 100,000 towards rescue efforts. I would assume this would be a valuable thing to have if you were in an area where you could be charged for any rescue efforts. For 7 bucks it too seems reasonable. You do have to sign up for the insurance deal, when you activate the SPOT, or it is, I think, a 150 buck option.