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[Screen replacement for Garmin Forerunner 245/245M display Assembly]This LCD Display screen replacement for Garmin Forerunner 245/245M is brand new and original quality, repairing your broken or malfunctioning screen,Compatible with Garmin Forerunner 245/245M. perfect fit for your device as original!

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The displays are quite thin and if you attempt to replace this yourself, I would be very careful inserting the display back into the front bezel, because if it is twisted or if you apply pressure unevenly, you can easily crack the LCD.

The reason is because the LCD display is cemented into the front bezel and you will spend hours trying to chip away the epoxy only to find that the replacement LCD is also cemented into a the front half of a new case. I learned this the hard way by not looking at the replacement part first. Working on a new model for the first time is always an educational experience!

A big thank you to Garmin, who sent me a GPSMAP 66sr to test. When I finished the test, I sent the unit back. This review isn"t sponsored or paid for in any way.

Since the positioning on the 66sr is likely the main draw, let"s jump right into it. Overall the positioning accuracy and reliability was the highlight of this device. The 66sr can get a position very quickly and often with a 6ft (1.8m) level of accuracy. If you consider that most trails are about 4 ft wide, and a human with their arms outstretched is generally around 6ft wide, this should be more than enough for navigating the backcountry. Although there are always variables when using a GPS unit, overall, the tracks you record on the 66sr should be the most accurate.

If you"re not familiar with how GPS works from a technical perspective, I highly recommend checking out my article explaining the concepts here. It will help you understand how to get the most out of your GPS.

The 66sr is a multi-GNSS receiver, and it can pick up signals from multiple satellite systems: GPS (USA), GLONASS (Russia), GALILEO (Europe) QZSS (Japan), and IRSS (India). The practical application of this is to have more satellites in the sky to choose from, making a fix quicker and allowing the chipset to select the best quality signals.

The 66sr is multi-band. Think of bands on GPS like the radio station bands of AM and FM. The original GPS satellites broadcast on the L1 band, and you can think of it like AM radio. You can listen to it, but if there"s interference, it doesn"t sound great. The L1 band is the most prone to interference, which leads to incomplete positioning data received, and therefore a less accurate position fix.

Since the original GPS satellites went up in 1993, many new and improved satellites have been launched. New signal bands have been a part of the technological advances on these satellites. One of these new bands is the L5 band, first launched in 2010. If the old L1 band is AM radio, think of L5 as FM radio. The signal quality is better, and the data received is generally of better quality.

Getting a fix to within 6 feet when standing still is just half of the equation. You want a GPS unit to consistently have that level of accuracy as you move through tree cover, canyons, valleys, etc. After using the 66sr in a wide variety of terrain, including heavy PNW canopy and deep canyons, I can say that the many satellite and band options available to the 66sr have meant that I consistently get a good (often 6ft) level of accuracy, regardless of the terrain.I would highly recommend getting this if your outdoor activity involves dense foliage, metropolitan areas with tall skylines, or deep canyons. This GPS will give you better accuracy than any other handheld outdoor GPS currently on the market REI Reviewer

I"ve never relied on elevation readings on handheld or watch GPS units. In the past, they"ve been up to hundreds of feet off the mark. But the multi-band and multi-GNSS systems on the 66sr have been usually within 10 feet of known elevations. I set the altimeter auto-calibration to once when the weather is stable and continuous if the weather is changing. The auto-calibration uses a combination of GPS and DEM map info (Digital Elevation Model) to guess your current elevation and calibrate from that. Given that the 66sr positioning is more precise, it probably positively affects the barometric altimeter calibration.

Overall I don"t expect any GPS to give me a super-accurate track when traversing the Grand Canyon, but the 66sr came the closest. Whenever there is a freakout along a canyon wall and the GPS tracks you as far away and then magically back the next second, it adds distance onto the track.Official NPS distance - North Kaibab > River Trail > Bright Angel - 22.7 miles + 0.5 farting around = 23.2 miles

Other GPS NotesThe GPSMAP 66sr support WAAS/EGNOS, and I"m guessing it"s because it doesn"t add much to the accuracy it can achieve with multi-GNSS and multi-band.

Here in the Southern California area, I"ve noticed that Galileo almost always gets multi-band from all the satellites, whereas GLONASS and GPS only have multi-band from a few satellites.

Make sure you sync your GPSMAP 66sr with Garmin Connect before heading out, which will preload satellite information onto the device in the form of an EPO file. The EPO file has orbit information for all the GNSS satellites, compiled from the internet. This saves the 66sr some work in decoding and processing that information directly from the GNSS signal.

Similar to other Garmin GPS devices, there is an "Expedition Mode" where the screen turns off, the device goes into low power mode, and only occasional GPS track points are recorded (about once an hour). I"ve found the tracking interval not to be very helpful as a hiker, so I don"t use it. But if Expedition Mode fits into your workflow, you can allegedly get 450 hours of battery life using it.

And like other Garmin outdoors units with maps, you can"t search for a street address unless you install the optional CityNavigator maps, an additional purchase. If you know the ballpark of where you want to go, an easy workaround is to move the map cursor over the spot and hit "GO" from there.

Everyone is different, and the alphabet soup of Garmin model numbers can be confusing, but here"s what I would recommend for most outdoors folks.If you need the best accuracy available in a consumer handheld GPS, then get the GPSMAP 66sr. It"s great for geocaching, hunting, and documenting land features.

If you are considering a GPSMAP 66s (no maps, no multi-band) or a GPSMAP 66st (no multi-band), I"d say you be much better off spending the incremental extra cost and getting the GPSMAP 66sr.

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