Garmin announced new GPS handhelds this week: new eTrex handhelds yesterday (product site) and new Rino handhelds today (product site). Both series have been around for ages: the eTrex series is Garmin’s entry-level handheld GPS receiver; the Rino series combines a GPS receiver with an FRS/GMRS radio.

As for the new units:

The eTrex 10 ($120) is a basic monochrome handheld; the eTrex 20 ($200) and 30 ($300) add colour screens and expandable memory; the eTrex 30 also adds a compass and altimeter.

The Rino 610 ($350) uses AA batteries and is thicker than its stablemates; the Rino 650 ($500) adds a removable lithium-ion battery (with less battery life), a microSD card slot, a compass and altimeter, a more powerful GMRS radio, a NOAA weather radio, and unit-to-unit transfer; the 655t ($600) adds to that more internal memory, preloaded topo maps and a five-megapixel camera.

Garmin expects them all to be available in the third quarter of 2011.