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Garmin Edge 705 HR review | GPS software & Signal

Published on: Wednesday, May 27th 2009                   Written by: Wim de Lange - Photography by: Mark Peters

Garmin Edge memory

Garmin Edge memory

Energy use of the Garmin 705 HR

Built-in batteries do tend to make me somewhat nervous. The Garmin Edge 705 HR not only is an extremely advanced bike computer but also a navigation instrument. Many users will want to use the unit when going on cycling trips in unfamiliar places. You don't want to be left without receiving any direction instructions in the middle of nowhere. And, on this point, I can reassure future users; the battery lasts a long time. After one day of use (approximately 8 hours), the battery was still more than half full. According to Garmin, the battery is able to last 15 hours, yet I experienced an even longer battery life. Moreover, recharging the battery only takes 3 hours, making it a good thing to do while you’re asleep.

Garmin Edge software

Garmin Edge software

Garmin Training Center software

As mentioned before; software is not included. The Garmin Edge 705 is able to store a lot of data in its 500 MB internal memory. Approximately one hour of workout data can be stored per megabyte. However, you want to have access to this data on your computer, right? This means first going to the Garmin site, where you can download the Garmin Training Center software. Once this software is downloaded, you can thoroughly examine the data on the computer and you can create training sessions. You can also use Garmin Connect on the website. It is a simple way of viewing data and sharing this data with other users. On the internet, you can find various reviews about this free software, with varying conclusions.

 

Garmin Edge GPS handheld

Garmin Edge GPS handheld

Garmin Edge charger

Garmin Edge charger

 

Edge compared to bike computer

Edge compared to bike computer

Garmin Edge bike computer with GPS function

The main difference between a luxurious bike computer and the Edge is the GPS function. This costs an additional 200 Euros (approximately). You then have a fully built-in navigation option. There is not that much room on the 'dashboard' of a bicycle. In this case, we only need one device for all these features. Although there are currently many enhanced bike computers, they lack the ability to plan routes or to find locations. During cycling trips, entering a waypoint as your starting point is often done to allow you to cycle around carelessly through the area. Points of Interest also provide all kinds of handy background information.

Garmin Edge GPS signal

Garmin Edge GPS signal

Accuracy of the GPS signal

The Edge is obviously from the latest generation of GPS devices. Once activated, satellites are found in no time and we can head off. I’ve seen this with modern devices before, but I also noticed their maximum accuracy is inferior to those of 'older' devices with a visible antenna, such as the GPSmap series. Especially in open areas. The main benefit is noticeable while travelling under trees: the Edge 705 HR is only inaccurate within a margin of 5 meters, whereas GPSmap can be inaccurate by 18 meters. This can have strange impact on the speed measurement. Despite the fact that I cycled quite consistently, I saw how the old device frequently jumped up or down by 1 km per hour.

 
 
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