Spot Messenger Trial

OK I have purchased a new toy. Its a Spot messenger 3! Wow you might say , its about the size of 2 match boxes and will be a way you can track my progress across the desert.
This is the link(hope it works that's why its called trial)
Graeme's Spot Mesenger
From the Spot messenger I can be plotted on a map, send an I'm OK , send a preset message, send a I'm ok but need help message and use it like a EPIRB/PLB (get me the hell out of here distress signal which hopefully I wont be needing)