This is the Garmin eTrex 10 GSP receiver. 

Each unit has been thoroughly checked by Geostuff.com.au before shipping to ensure that the unit is functioning properly, 

The eTrex 10 features

• Global basemap (not upgradable)
• Paperless geocaching - Full support for GPX and Geocaching field notes uploads.
  
• Tracking with both GSP and GLONASS satellites for quicker lock-on (GLONASS is a new satellite system created by the Russian Federation that will be fully operational in 2012)
  
• Long battery life - up to 25 hours. 2xAA (not included)
• 2.2 inch monocrome display. 
• Dimensions - 5.4 x 10.3 x 3.3 cm
• Weight - 142 grams approx including batteries.
  

Supplied complete with:

• 30 day premium membership to Geocaching.com
• USB Cable - while the "official" position is that you must use a Windows based PC for paperless caching with the Etrex10 - but we have successfully used a Mac.
• Manual