Para calcular a classificação geral de estrelas e a análise percentual por estrela, não usamos uma média simples. Em vez disso, nosso sistema considera coisas como se uma avaliação é recente e se o avaliador comprou o item na Amazon. Ele também analisa avaliações para verificar a confiabilidade.
I recently purchased the Etrex 30x. I already have the Etrex 20 from a few years ago. The Extrex 30x and Etrex 20 both boot up in the same amount of time with the 20 beating it by a second or two. I bought the 30x because I wanted the electronic compass and the Point n Go feature. Both are still very slow at acquiring satellites compared to the Garmin 64s. The Garmin 64s is awesome in getting a satellite connection much quicker than the Etrex models. And maintains the satellite signal even if you are inside a building but 15 feet away from a window. The Etrex models start to lose the signal at that point.
Buying a GPS was a big decision for me. Which one to get...? With it being an expensive item, buyer's remorse was not something that I wanted to deal with. Thankfully I am 99% happy with my choice. A lot of people complain that the Garmins are not "user friendly" but frankly, I have to disagree. Did I spent some time figuring it out? Sure. Did it take me hours and hours and ended with me crying in frustration? No.
What I like: 1. Excellent battery performance, especially if you keep your screen at the dimmest (perfectly good in daylight, not so good in the dark). 2. Small and light 3. Robust and although I'm sure it's not waterproof to the point where you can submerge it, I use it in rain all the time 4. Alarm clock! Wow had no idea I would use this feature so much 5. Pretty easy to upload/download/transfer tracks without "proper" software (just using your PC/Mac and GoogleEarth)
What I don't like: 1. It doesn't have a "key lock" function. So every now and then I accidentally mark waypoints when my GPS press against something in my pack 2. The joystick button is sometimes a little bit unresponsive. But by 2 seconds or so. So not a biggie. 3. I haven't fully wrapped my head around the BaseCamp software and I don't understand when I rename my tracks/waypoints, the default names seem set in BaseCamp and don't change.
What you have to remember: 1. You MUST purchase a micro SD card and you have to make sure you get one with the right specs. You actually cannot buy the fastest/best cards out there because it wouldn't work. I've read online that a 32 GB FAT32 formatted card is the maximum that you can go. But best to verify this with Garmin. 2. I seriously suggest purchasing a screen protector. Once your screen is scratched... it's scratched. Don't be frugal on this.
If you are in the market for an entry level GPS, this is the one to go for.
I like this unit. I was using a Garmin GPSMap 60CSX (now my backup) and this unit aquires much faster and is more accurate. With the ability to use larger Micro SDCards, I grabbed many free maps online, made some of my own, and purchased the Topo 24k from Garmin. It's small, light, and last almost 24 hours on battery for me. I bought the backpack attachment, but also printed a couple of clip accessories I found on Thingiverse. I'm happy!! Also, it is rated IPX7 which seems to be defined as:
IPX-7 Waterproof Standard Puddle, stream, beer cooler and splash rated - Protected against water immersion - Immersion for 30 minutes at a depth of 1 meter.
This is a good unit, in a field of GPS units that all have drawbacks. There is no single unit that has dual band, downloadable maps, great battery life, and a high resolution screen. The eTrex 30x has it all except for dual band, so I have stuck with it until something better comes along. I do get a good 20-30 hours of battery life. I question the usefulness to most people with shorter battery life, at least for something like backpacking where it is critical to have a functional unit.
To answer a question some people have, it takes a 32GB memory card. I have one inside right now. But the more satellite area you have downloaded to the unit, the longer it takes to start up so there is a small penalty there.
Took me about 5 hours to figure out custom maps on the device. Make sure each one is less than 3MB and that the name has no spaces. Once I was able to start creating custom maps, this has worked like a charm. Internal memory is decent. I have yet to fill it up. If you do you can use a micro sd card for additional storage. Electronic compass is accurate and it acquired location very quickly when turning on. The battery life was around 18 hours when I tested it. Only issue I have seen so far is the maps take a little time to load if you are moving fast (in a car) or if you are scrolling around with the pointer. Over all for the price and what it does, I am happy and wound recommend to anyone who wants a color map gps with out all the extra features most high end gps have now.
Update: After using in the field quite a bit, I noticed the compass stops functioning after about 2-3 hours of use. Location is still accurate and no issues with it freezing, but you might want to take a compass with you.
If you are familiar with the older blue etrex legend, the etrex 30x will be just as familiar. The 30x does have a few more options, however operating the different functions are easy. The 30x basemap is nearly the same detail as the legend under magnification. The 30x does have shaded relief in color in lesser magnification. Satellite receive sensitivity is superior over the legend model. (Glonass, waas turned on) Heavy tree cover may not be as much of an issue with the 30x. Battery life is extended farther than legends run time as well. This model has been discontinued and not sure what will replace it. The electronic compass and barometer are the main differences between the 30x and the 20x still being made. Get the 30x while still available and prices are very low.