Garmin Edge 840.

The Gavler Review.

Garmin Edge 840 Review: The Goldilocks Bike Computer

The Garmin Edge 840 ranks number 6 on Gavler's Best Bike Computers list with a 9.0, and it earns that spot by refusing to make riders choose between screen size and price. Cyclingnews summed it up well: "The perfect antidote to the rise of the supersize bike computer — full flagship features in a compact, manageable unit." It's the computer for riders who want Garmin's deep training analytics and navigation without paying for the Edge 1050's larger screen and ecosystem extras they may never use.

What it is

The Edge 840's headline feature is genuinely unique in the category: it's the only bike computer that offers both touchscreen and physical button controls simultaneously, rather than forcing a choice between the two. Scroll through data pages with buttons during a rainy descent, then tap through navigation menus at a sunny rest stop — the interface adapts to whichever input method suits the moment, rather than locking riders into one approach.

The training analytics suite matches the depth of Garmin's flagship Edge 1050, including Training Status 2.0, training load focus that breaks recent training into anaerobic, high aerobic, and low aerobic categories, recovery time estimation, VO2 max tracking, and a Real-Time Stamina estimate that projects how much a rider has left mid-ride. These metrics sync with Garmin's watch ecosystem, so data from an Edge 840 ride feeds into the same fitness model as Garmin watch activities — a real advantage for multi-sport athletes who want a unified picture of training load rather than isolated device data. The 2.6-inch display uses Garmin's transflective technology, which becomes more readable in direct sunlight than a standard LCD. Navigation includes full-color maps, turn-by-turn routing, and ClimbPro climb visualization. Battery life runs approximately 26 hours per charge on the standard model, roughly 32 hours on the Solar variant, and the unit accepts both ANT+ and Bluetooth sensor connections.

In use

Cycling Weekly's review focused on exactly the feature that sets the 840 apart from single-input rivals: "The touchscreen is excellent and the addition of buttons is very welcome when wearing gloves — as sensitive as a modern smartphone, and unaffected in heavy rain." That last detail matters more than it might seem — touchscreens on other bike computers, including Garmin's own Edge 1050, are consistently flagged by reviewers as unreliable in wet conditions. The 840's button backup means a rider isn't stranded fumbling at a screen that won't register a raindrop-covered fingertip.

BikeRadar's review highlighted Real-Time Stamina as a genuinely useful addition, while also delivering the most practical piece of buying advice in any review of this computer: "Real-Time Stamina is a clever addition that estimates how much you have left, and the solar premium is hard to justify for most riders." That's a rare instance of a reviewer actively steering buyers away from the more expensive variant, and it's a credible one — with roughly 26 hours of standard battery life already covering the longest single-day rides most cyclists will attempt, the Solar's extra six hours only matters for genuinely long unsupported efforts.

Gavler's own scoring notes underline the value proposition directly: the Edge 1050 adds a larger, brighter screen for around $200-300 more, "leaving the 840 as the value-focused all-rounder." That framing is accurate — the 840 isn't a stripped-down budget computer, it's a deliberately right-sized one that keeps the training depth while trimming the screen size and ecosystem reach that not every rider needs.

Strengths

• The only computer with simultaneous touch and button input. Riders never have to compromise on input method — buttons work in rain and gloves, touch works everywhere else.
• Flagship-matching training analytics at a meaningfully lower price. Training Status 2.0, training load, recovery, VO2 max, and Real-Time Stamina match the Edge 1050's depth at $200 less.
• Genuinely sunlight-readable display. The transflective 2.6-inch screen holds up in direct sun better than standard LCD competitors.
• Unified fitness tracking across the Garmin ecosystem. Data syncs with Garmin watches for a single training picture across devices and sports.

The trade-offs — who should skip it

• Riders who want the largest possible screen should look at the Edge 1050. Its 3.5-inch transmissive display and ClimbPro 2.0 dynamic climb tracking are real upgrades the 840 doesn't match.
• The Solar variant is hard to justify for most riders. BikeRadar's assessment stands — unless multi-day unsupported riding is a regular occurrence, the standard 840's 26-hour battery life is already more than most rides require.
• Riders who don't need deep training analytics are paying for depth they won't use. If navigation and basic ride data are all you want, a simpler, cheaper computer like the Wahoo ELEMNT BOLT 3 covers the essentials at a lower price.

How it compares

The Wahoo ELEMNT BOLT 3 sits one rank above the Edge 840 at $329 and takes the opposite philosophy — Wahoo's LED navigation strip and streamlined app-based setup prioritize simplicity over Garmin's exhaustive feature depth, at $70 less. It's the better choice for riders who find Garmin's menu structure overwhelming and just want reliable navigation and connectivity. The Sigma ROX 12.0 Sport, ranked one spot below the Edge 840 at $249, undercuts both by a wide margin with offline OpenStreetMap navigation and dual ANT+/Bluetooth connectivity, though Gavler's scoring notes flag that its software polish and ecosystem depth lag behind Garmin and Wahoo. Riders choosing among the three are trading off training-data depth (Edge 840), setup simplicity (BOLT 3), and price (ROX 12.0 Sport).

The Gavler verdict

A 9.0 that reflects a computer that got the sizing decision right — Garmin took its flagship-level training analytics and dual-input reliability and packaged them into a smaller, cheaper unit without meaningfully compromising the experience. The Edge 840 isn't trying to be the most feature-complete computer Garmin makes; it's trying to be the one most riders should actually buy, and the combination of touch-plus-button input and training depth at $399 makes a strong case for that. Buy it if you want serious training data without flagship pricing, and skip the Solar upgrade unless multi-day unsupported riding is a regular part of your calendar.

Common Questions

Is the Garmin Edge 840 worth it in 2026?

For riders who want flagship-level training data without flagship pricing, yes. It ranks sixth on Gavler's Best Bike Computers list with a 9.0. Cyclingnews called it 'the perfect antidote to the rise of the supersize bike computer — full flagship features in a compact, manageable unit,' and Cycling Weekly praised the touchscreen as 'unaffected in heavy rain,' with buttons available as a glove-friendly backup.

Garmin Edge 840 or Garmin Edge 1050?

Buy the Edge 840 if you want the same core training analytics and dual touch-plus-button input at roughly $200 less. Buy the Edge 1050 if you want a larger, brighter 3.5-inch touchscreen, ClimbPro 2.0's dynamic climb tracking, and the deepest ecosystem integration Garmin offers — the 1050 ranks first on this list at $599 versus the 840's $399.

Is the solar version of the Garmin Edge 840 worth the upgrade?

For most riders, no. Gavler's scoring notes are explicit that the solar premium is hard to justify — the standard Edge 840 already delivers roughly 26 hours of battery life, extending to about 32 hours on the Solar variant. Unless you're doing genuinely long, multi-day unsupported rides, the solar upgrade adds cost without meaningfully changing how you use the computer.