Introduce the rider you are today to the one you’ll be tomorrow. The Edge 840 touchscreen cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Get superior accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any environment matched with a responsive touchscreen so you can tap, pan and swipe on the fly. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones.
Q: Why does the Edge 840 use multi-band GNSS technology?
A: The Edge 840 uses multi-band GNSS technology to provide superior accuracy, especially in areas with dense tree cover or urban canyons.
Q: What is the maximum depth of water resistance for the Edge 840?
A: The maximum depth of water resistance for the Edge 840 is 3 feet.
Q: What is the battery life of the Edge 840?
A: The battery life of the Edge 840 is 32 hours.
Q: Can the Edge 840 be used for indoor cycling?
A: Yes, the Edge 840 cycling computer can be used for indoor cycling.
Q: How does the Edge 840 provide adaptive coaching?
A: The Edge 840 offers targeted adaptive coaching when used with a compatible power meter and heart rate monitor to help you manage your efforts by providing power targets throughout a course.

Introduce the rider you are today to the one you’ll be tomorrow. The Edge 840 touchscreen cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Get superior accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any environment matched with a responsive touchscreen so you can tap, pan and swipe on the fly. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones.

The Edge 550 cycling computer features a vivid color display, button controls and advanced features to guide your training and provide insights into your performance. Get smart fueling alerts that account for fitness, course demands, heat and humidity when using the power guide feature or following a workout with your compatible power meter and heart rate monitor. Ride like a local with preloaded maps for road, gravel and trails. Get alerts for road hazards reported by fellow cyclists — right on your Edge — when used with your compatible smartphone and the Garmin Connect app. Train like a pro with a variety of plans that integrate seamlessly with your device. Garmin Cycling Coach plans even adapt to your performance, recovery and more when riding with your compatible power meter and heart rate monitor. Edge 550 has a sleek, compact design and delivers up to 36 hours in battery saver mode.

Introduce the rider you are today to the one you’ll be tomorrow. The Edge 540 cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Get superior positional accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any conditions. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones.

Introduce the rider you are today to the one you’ll be tomorrow. The Edge 840 Solar touchscreen cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Ride longer with solar charging, and get superior accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any environment matched with a responsive touchscreen so you can tap, pan and swipe on the fly. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones.
| Pros for Garmin - Edge 840 2.6" GPS Bike Computer - Black | |||
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| There were no pros for this product— | There were no pros for this product— | There were no pros for this product— |
Customers appreciate the Edge 840 2.6" GPS Bike Computer for its ideal size and great overall performance. They also value its enhanced connectivity, noting that it connects to sensors faster than previous models. There were no cons mentioned about this product.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
The perfect size of all the bike computer. I can use it in my RB, Gravel and very safe for my MTB. Good map and it tracks every progress of your fitness journey.
Posted by MarcM
I’ve been using the Garmin 840 for a while now and I’m really impressed. The size is perfect — compact yet easy to read while riding. It tracks power, heart rate, and other metrics with great accuracy. I’ve paired it with my indoor setup and it works flawlessly. Garmin continues to be a brand I trust for performance and reliability. Highly recommended for serious cyclists!
Posted by JulioG
Love this bike computer, the touchscreen makes life so much easier on rides. And it's amazing having everything I need to know right in front of me. I even love the "drink water" prompts as a simple reminder.
Posted by AlexM