購入先は Amazon.com にしようと思います。http://www.amazon.com/Garmin-Non-Mapping-Personal-Navigation-Unit/dp/B0002V4QVG/ref=sr_1_3?ie=UTF8&m=A2JUPN4BTA3CZV&s=electronics&qid=1256096473&sr=1-3次のGPSも購入対応可能です。Garmin GPS 60CSx Handheld GPS Navigatorhttp://www.amazon.com/Garmin-GPS-60CSx-Handheld-Navigator/dp/B000CSOXTO/ref=sr_1_1?ie=UTF8&m=A2JUPN4BTA3CZV&s=electronics&qid=1256198802&sr=1-1