GPS personal navigation devices based on Symbian or Windows Mobile platforms are becoming more powerful. Separate gps devices such as Magellan or Garmin will be used more rarely and for specific purposes.
The big disadvantage of the PDA or smartphone to date was mainly mechanical and water resistance. Here’s one of the first products, a decent price, and which destroys the latter argument.
AERO WIRELESS A25 smartphone with GPS
Aero uayarles A25 is waterproof and udaroustoychiv and latest technology for navigation and communication, based on Windows Mobile.

Airo A25 is a four-band EDGE / GPS smartphone using firmuear Airo ATL, which allows users to make the most of the functions for localization – 5 meters accuracy, and fixed for 10 seconds.
A25 is suitable for enterprayz (business) applications such as automation of business or delivery through technology GroupLocate ™. It allows using the phone as a client interface for network related locational server that can accept, process and transmit information on the situation and status of many users (Photo 2 and 3).
The hull is MilStd 810F and was successfully certified for the fall, vibroustychivost, udaroustoychivost, temperature, and water resistance. Degree of protection IP 67