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Edge 840 Computer

4.451388888888889 out of 5 stars
144 Reviews
Current price: $399.99 Original price: $449.99
11% off



Why We Like The Garmin Edge 840 Computer

Our search for an advanced GPS cycling computer that meets our needs ends with the Garmin Edge 840 Computer. Its touch screen and streamlined user interface make it easy to swipe and tap to our desired screen to access important information. Pairing our device with a compatible heart rate monitor or power meter lets us see live power targets and stamina insights as we ride and receive personalized adaptive coaching and workouts based on our current training load. The superior battery life keeps us riding as long as we desire, while the included multi-band GNSS technology provides superior location accuracy even in a dense forest or high up in a canyon.


  • A touch screen cycling computer with advanced GPS navigation
  • Provides personalized coaching and workouts with a HRM or power meter
  • GNSS multi-band technology delivers pinpoint accuracy in any location
  • Responsive touch screen and button controls for friendly use
  • ClimbPro planner keeps us climbing by showing remaining ascent/grade %
  • Ride-specific maps show popular trails, roads, and points of interest
  • Use for up to 26hrs in demanding use and 42hrs in battery saver mode
  • Includes an out-front and standard mount for two mounting options
  • Item #GRMF06I
Housing Material
Battery Type
Lithium ion cell contained in equipment
Battery Life
[demanding use] up to 26 hours, [battery saver mode] up to 42 hours
Low Battery Indicator
Mount Type
out-front mount, standard mount
Edge 840, out-front mount, standard mount, tether, USB-C cable, documentation
2.3 x 3.4 x 0.8in
Face Size
2.6in diagonal
Claimed Weight
cross-country, enduro, gravel, road cycling, trail
Manufacturer Warranty

Overall Rating

4.5 based on 144 ratings

Review Summary

1 Stars - 5 reviews
2 Stars - 5 reviews
3 Stars - 10 reviews
4 Stars - 24 reviews
5 Stars - 100 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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2 out of 5 stars

June 10, 2024

Sweet when it works...

I've used it several times

I have had nothing but troubles with this computer. The touch screen is nothing short of finnicky.... This is like the original touch screen cell phones... Mediocre at best. Tons of what appears to be software issues. The few times it does work its pretty sweet. I would NOT purchase again.

3 out of 5 stars

June 10, 2024

It has potential

I bought this a few weeks ago and I can’t get it to sync with the heart rate monitor and the cadence only shows sporadically. I love the touch screen, much easier than my 830.


Originally reviewed on Garmin

5 out of 5 stars

June 9, 2024

Easy to use and accurate so far

I have had this for about three weeks. The first week it was cold and rainy, but I did my best to read the directions and set it up. I have had a Polar The second week I got on my bike for a short ride to see if it worked as expected. I found I had several questions and called Garmin to get them answered, they answered them well. This week I used it twice after again asking a few questions, it worked as I wanted, and I am now able to change the display while riding and it really works well. So far, I am glad I decided to spend the extra money and get the Garmin It is easy to read for me. I still want to use more of the available features, but it works very well so far. It definitely outperforms the old Polar I had, and a couple of cheaper computers I tried.

Originally reviewed on Garmin

5 out of 5 stars

June 9, 2024

The Supercomputer for the bike!!!!

Out of the box it is a supercomputer reading the manual and setting it up you have a supercomputer on your handlebars. The 840 can be configured to provide information on everything but the amount of air in your spare tube. The distance, time, splits, incline\decline status, phenomenal battery life, and touchscreen is so far above the rest you are selling yourself short not to use this. The screen is easy to read, and the sun glare is never an issue. It is very feature rich and severe weatherproof.


Originally reviewed on Garmin

5 out of 5 stars

June 8, 2024

User Friendly

I have had my 840 for the last month and use it every day. Easy to read, simple to se and I love the touch screen. If you try it, I am sure you will love it, as I do.


Originally reviewed on Garmin

5 out of 5 stars

June 7, 2024

Long lasting

Upgraded my Garmin do to old one wouldn't last long on my riding. Easy to transfer my old settings to the new one. I can riding all day not have to worry about losing my status


Originally reviewed on Garmin

5 out of 5 stars

June 2, 2024

Loving it so far

Little bit of a learning curve going from wahoo but once I figured it out I’ve loved it, connects with my wahoo watch for heart rate and battery life is awesome, loaded with features I’m sure I haven’t even tapped the surface of yet too.


Originally reviewed on Garmin

5 out of 5 stars

May 31, 2024

Edge 840

Have had for couple weeks, not sure yet have had a couple issues, climb pro stayed on too long, and heart rate would not connect, my 1000 was flawless?


Originally reviewed on Garmin

2 out of 5 stars

May 29, 2024

So far....too complex

I'm admittedly poor at figuring these sort of devices but even allowing for this the device is so complicated. I just wish there was a simple way of doing less - routes, turn by turn and recorded rides. That's it!


Originally reviewed on Garmin

1 out of 5 stars

May 28, 2024

Unnecessarily Poor Interface and Integration

I am highly technologically comfortable. I own an EpixPro, GPSMap Mini, GPSMAP 66i, an Index BPM and Index S2 and use most every day. While the Garmin Universe is poorly organized on the best of days, the 840 has been the most frustrating. I'm going to try it for a few more rides and if it continues to be problematic I will return it.


Originally reviewed on Garmin