Garmin NavTalk Owner's Manual page 13

The first time you power-up your NavTalk is an important step
in getting off to the right start in achieving desired results and satis-
factory operation. A basic understanding of the capabilities of the
NavTalk and how its two main features function is essential to prop-
er operation and maximum performance.
Before you can actually turn on your unit, the power source
(rechargeable battery pack) must be fully charged. So, you may want
to jump ahead to Section 2.2, "Battery Charging and Installation" to
begin that process, then read this manual while waiting for the bat-
tery to complete its charging cycle.
This section introduces you to the NavTalk List of Features and a
basic overview of GPS Navigation and Cellular Phone usage. Because
both NavTalk GPS and Cellular Phone functions are full-featured
and go beyond conventional equipment, you will need to become
familiar with their use before using this unit.