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.
Details
- 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
- silicone
- Clock
- yes
- Wireless
- yes
- Backlight
- yes
- Water-Resistant
- IPX7
- 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
- yes
- Mount Type
- out-front mount, standard mount
- Includes
- Edge 840, out-front mount, standard mount, tether, USB-C cable, documentation
- Dimensions
- 2.3 x 3.4 x 0.8in
- Face Size
- 2.6in diagonal
- Claimed Weight
- 84.8g
- Activity
- cross-country, enduro, gravel, road cycling, trail
- Manufacturer Warranty
- limited
Reviews
Q&A
What do you think about this product?
Overall Rating
4.5 based on 245 ratings
Review Summary
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.Here's what customers have to say
The product offers a range of features and capabilities, including a large, bright display, user-friendly interface, and integration with other devices. Reviewers praise its performance, accuracy, and training features, but some find the setup and learning curve to be complex. Overall, it is considered a significant improvement and a great choice for cyclists seeking a feature-rich bike computer.
AI-generated from the text of customer reviews.
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Selecting an option will reload the available reviews on the pageJuly 27, 2025
Dodge gradient results
Have been using my 840 for many rides. Past few months the gradient display has stopped working. Uphills with negative gradients, downhills otherwise but not all the time. Cannot find a fix.
Originally reviewed on Garmin
May 31, 2025
Awkward menu layout and altimeter doesn’t work
Overall, this is a good unit. I like the amount of features that it has in the battery life. But I don’t like, is the clumsy/awkward menu layout that takes time to find things. I’ve had this edge 840 for about a month now, and still have trouble navigating certain areas. Today try to do a benefit charity ride in the rain and the altimeter stopped working a few miles in. Not the end of the world as the navigation still worked. But this seems like an issue that should have been fixed in the last version and it’s kind of frustrating when you are trying track stats and plan efforts on climbs. Wish I had known about the altimeter issue before I purchased.
Originally reviewed on Garmin
May 27, 2025
The device crashes
When using the map the device crashes, it shuts down and after a while it turns back on. It's very frustrating as this happens almost every time you try to look at the streets around you, making it impossibile to find your curse if you get lost because the device keeps shutting down
Originally reviewed on Garmin
March 17, 2025
Overly complicated with unhelpful manual
There is no doubt that the edge 840 is feature packed but it is unnecessarily complicated to set up and too prescriptive in terms of defaulting to workouts and performance rather than having those as a choice. Yes there are useful features but basic data should be there out of the box with anything else a matter of choice.
Originally reviewed on Garmin
March 5, 2025
It's a solid MTB cycling computer! It does everything I need it to reliably.
Originally reviewed on ExpertVoice.com
March 3, 2025
Nice computer
Nice computer with a lot of features (more than I have delved in to). It synchs easily with my iPhone via the Garmin app. The battery easily lasted for a 10 hours day ride at Leadville.
Originally reviewed on ExpertVoice.com
February 24, 2025
Good size and perfect tech to track my mountain bike and gravel rides.
Originally reviewed on ExpertVoice.com
February 17, 2025
Informative
A lot of Information to gather after a ride. Yes, it's more than I would ever really need, but it is nice to see all the metrics.
Originally reviewed on ExpertVoice.com
January 10, 2025
Solid Data Tracking
Been using this for a couple of years now, easy to navigate the menu, Works GREAT even in low temps (single digits). Battery life is fantastic in all temps. Some adjustments should be made to get this a 5 star. No way to auto power off (only sleep) so if you leave the unit to download your activity and forget then the battery goes dead. Older units had this feature. 2nd fault - once you enter an activity you have to lock the screen to keep sweat or rain from changing your layout. This should be automatic, seems the opposite. Last thing they should build in Bikes and Gear for you to choose in an activity rather than needing to go to the app afterwards to choose this. All in All I highly recommend Garmin Edge GPS units! these items are small inconveniences.
Originally reviewed on Garmin
January 8, 2025
Great bike computer but takes a long time to figure out how to set up the screens. Definitely better battery life than some other computers out there. I like the maps.
Originally reviewed on Garmin
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