Garmin iQue 3600 For a handheld with a GPS receiver and a large, 320x480-pixel display, the iQue is relatively light and compact, weighing 5.2 ounces and measuring 2.8 by 5 by 0.8 inches. The depth tapers slightly to about 0.5 inches, making the device a bit more pocketable. The protective on the iQue, the attachment moves to the bottom and gives its standard position to the flip-up GPS receiver. To start satellite acquisition, you turn on the unit and pop open the antenna, whose hinge lets you choose the best angle for reception. The Palm launch and scroll buttons below the display are standard, but one of them is mapped (no pun intended) to switch between the GPS map-related screens. You zoom in and out of maps with the scrollwheel, and the Escape key lets you exit an application. The jog dial is great for zooming in on maps, and the Escape button backs you out of apps. The iQue comes with a sturdy but heavy syncing cradle and an AC adapter, whose outlet prongs fold in to save space.

The iQue has a speedy 200MHz processor to handle the resource-intensive tasks of map zooming and redrawing. Nevertheless, the device paused occasionally while redrawing some complex urban areas. Like Sony's larger CLIEs, the iQue has a spacious 320x480-pixel transflective screen that can produce 65,536 colors. Unfortunately, the iQue has a glaring weakness: battery life. The gluttonous display and GPS receiver quickly sap power. Performance will be a bit better with the GPS receiver as long as you minimize backlight use.The iQue also has a battery-saving mode, in which the unit syncs with satellites as little as possible.