can it be used both in the UK and in the US

Yes the Garmin eTrex 10 work fine in the UK and it should work just as well in the US or any point where you can get a good signal from satellites. You can Sort the Map datum, to increase accuracy in the country you are in as well. You can also set it to pick up signal from Glonass a second Group of satellites that work conjunction with GPS satellites. Accuracy, is as good as 5m-18ft in open areas. More info copy this address. --> http://gpstracklog.com/2012/03/garmin-etrex-10-review.html

Can you download so maps onto it?

Very simple to do: Go to extract.bbbike.org, choose Garmin OSM (UTF-8) as the format and move the map to your desired location. Drag the box to your desired size but note the file size and make sure this does not go over 5mb. Add a file name and extract, you get a link delivered to your email when it is ready. Meanwhile plug in the Etrex to your computer and navigate to the Garmin folder on the Etrex. Rename gmapbmap as gmapbmapold or something so you do not lose the old map. Copy the extracted file into the folder and rename it gmapbmap. Unplug the Etrex and reboot it, it will then load in your new map. However, you will only see this map if you are in that area or you zoom out a lot. Very useful if you are doing geocaches in a certain area.

If I want to download a UK map like the North Downs Way route map will the GPS tracking allow me to walk or run the route and indicate when I have gone off course ?

As this is the entry model you can't download maps but you can download waypoints along a route e.g. The North Downs Way and then the GPS will tell you where you are in relation to each waypoint. Once you have completed the route you can download the GPX file and input it into other free software to display your complete route overlaid onto a map. The GPS will certainly tell you how far and which direction to go to each waypoint.

Is it only used for geocaching??

No, as well as the geocaching facility, it can also be used to obtain present location using OS Grid refs., to use waymarks to plan a route, to record a "breadcrum" track on where you have been, etc. It is multifuncional, however, I recommend that you take up the option of the guide book as the enclosed manual is too brief.Hope that this helps.

ASIN	B00542NV32
Additional Features	Paperless Geocaching, Track More Satellites
Are Batteries Included	No
Audio Output Mode	Digital
Battery Average Life	20 Hours
Best Sellers Rank	#14,294 in Electronics ( See Top 100 in Electronics ) #6 in Handheld GPS Units
Brand	Garmin
Built-In Media	eTrex 10, Lanyard, USB cable, Manual
Compatible Devices	Touch devices, computers and generally any device that can use USB connectivity or global map
Compatible with Vehicle Type	Car, Truck, Motorcycle, etc.
Connectivity Protocol	wired
Connectivity Technology	USB
Control Method	Touch
Customer Reviews	4.3 out of 5 stars 6,401 Reviews
Display Type	LCD
Global Trade Identification Number	00753759975845
Human-Interface Input	Buttons
Item Dimensions L x W x H	2.13"L x 1.3"W x 4.06"H
Item Type Name	Garmin eTrex 10 Worldwide Handheld GPS Navigator
Item Weight	141.7 Grams
Manufacturer	Garmin
Map Types	Australia
Memory Storage Capacity	6 MB
Model Name	eTrex 10
Model Year	2011
Mounting Type	Spine mounting
Operating System	Garmin
Resolution	128 x 160 pixels
Screen Size	2.2 Inches
Special Feature	Paperless Geocaching, Track More Satellites
Sport Type	Running
Supported Satellite Navigation System	GPS
Touch Screen Type	Resistive
UPC	753759975845
Unit Count	1.0 Count
Vehicle Service Type	Car, Truck, Motorcycle, etc.
Warranty Description	1 year limited

eTrex 10 Outdoor Handheld GPS Unit

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