Garmin eTrex is a line of GPS's put out by Garmin.
Yes, you can enter coordinates manually on the Garmin eTrex Legend H GPS. It allows you to input latitude and longitude coordinates to navigate to a specific location.
The manual comes with the GPS in the package, but if you are missing it, I'm sure the guys at Garmin would be more than happy to help you find a manual.
One can find instructions on using an Etrex Legend GPS system from the instruction manual provided with the item. Alternatively, one can find instructions from the official 'Garmin' webpage.
Taking advantage of all the information given in the question, I can only conclude that something is broke. The only thing you can do about it on your own is make sure that the battery contacts in the unit are clean and shiny, and then make sure that the batteries in it are fresh, and installed in the right direction.
garmin nuvi 350 is more graphic
The Garmin website handles updates for all it's current products including the Garmin Etrex. The most current version is the ETrex Legend 3.90 released in 2008.
For a Garmin Etrex GPS system, a receiver is not required. You can simply just buy a Garmin Etrex GPS and use it without having to buy any other accessories such as the receiver.
The difference between a Garmin Etrex handheld and other Garmin products is that the Etrex handheld offers a more broad range worldwide database of cities and it also accepts downloaded information about local places of interest.
The Etrex Garmin is water resistant, as it can take a splash or occasional dunk in the water and keep on working. Though it is not waterproof to the point of being able to work underwater.
You can find pricing for a garmin etrex vista on the following site: https://buy.garmin.com/shop/shop.do?pID=6403. It's a good product.
The Garmin ETrex handheld has all the features of a regular GPS, including the ability to update software. It's small enough, however, to fit in the palm of your hand.
There are several different web sites where you can purchace a garmin etrex cable. You can find them at web sites like amazon.com and also at garmin.com. It is always best to get the correct cable from the manufacturer.
The Garmin eTrex uses a USB cable in order to connect to your desktop, laptop or other device. There are no pins in the USB cable and no other interface is available on most models.
www.garmin.com/etrex is your site for buying any accessories on-line manufactured by Garmin. This site can answer any question regarding details and price of whatever product you may be looking for.
The Etrex Legend Garmin is very easy to use. The Etrex has multiple languages, a 'stick' to point and use, highly sensitive mapping and is user friendly.
The Etrex model of GPS is made by Garmin and can be found at most electronics retailers. If you are interested in buying the device online, then Amazon is a very good retailer in which the Etrex GPS is available.
The Garmin ETrex Handheld is just like the original, larger Garmin, only it fits in the palm of your hand. It is more convenient for a passenger to use, to take into your hotel to get directions etc. It's size is much more convenient...and easy to hide in your car!