A "deadman" provides additional security, as long as you yourself can no longer respond.
Another note: the battery lasts longer, as long as the GPS activity, if not required, has been disabled on the device.
Ultimately requires GPS activity abundant energy.
The energy consumed is quickly recharged.
Reserve batteries completely resolve this problem.
Equipped with ADAC service and helpline, it is a particularly safe companion.
In emergency situation from there located, everything is rapidly taken to obtain the necessary help / rescue.
Safety flat has its price and this is, in relation to other mobile devices-without such a function-, very favorable.