The bike computer market has turned over almost completely since 2024. Garmin launched the Edge 1050 in June 2024 and the compact Edge 550 and 850 in September 2025. Wahoo added the large-screen ELEMNT ACE in December 2024 and replaced the BOLT and ROAM with third-generation models in May 2025. Hammerhead released a new Karoo in May 2024. If you are comparing models using older reviews, you may be looking at devices that have since been replaced.

This guide compares the seven current models from the three main brands, using each manufacturer's own product pages, manuals, support articles and press releases. Specs and US prices were checked in October 2026. It's a specification comparison, not a ride test.

The current lineup at a glance

All seven connect to sensors over ANT+ and Bluetooth, have Wi-Fi, and support on-device rerouting and rear radar. None has a cellular (LTE) connection.

Battery claims are measured differently by each brand: Garmin quotes "demanding use" and "battery saver" modes, Wahoo gives a single "up to" figure, and Hammerhead quotes 35+ hours with battery-saving customisation. Don't compare them as like-for-like.

Features, size and durability

All seven devices offer climb features that work without a loaded route: Garmin says ClimbPro works on free rides, Wahoo's SUMMIT detects climbs on the road ahead, and Hammerhead's CLIMBER auto-detects climbs with or without a route.

Two practical notes:

• Storage. The Edge 1050 has 64 GB, the BOLT 3 32 GB, and the ROAM 3, ACE and Karoo 64 GB. That's plenty for maps and ride files on all of them.
• Satellite systems. All support multiple satellite systems. Garmin, Wahoo's third-generation devices and the Karoo also list multi-band or dual-band GNSS, which can help accuracy around tall buildings and under trees.

Garmin Edge 1050: the feature-rich flagship

Garmin calls the Edge 1050 its brightest and smartest cycling computer. Its 3.5-inch, 480 × 800 colour display is the largest in Garmin's range, and Garmin quotes up to 20 hours in demanding use or up to 60 hours in battery saver mode.

Key features, according to Garmin:

• touchscreen plus all-metal buttons and a replaceable quarter-turn mount;
• built-in speaker and bike bell, Garmin Pay and 64 GB of storage;
• preloaded maps, on-device course creation, ride-specific routing (road, gravel, mountain) and surface-type alerts;
• ClimbPro ascent planning on courses and free rides;
• incident detection, LiveTrack, community hazard reports and GroupRide features;
• compatibility with Garmin Varia radars and lights.

Best for: riders who want the most features and the biggest Garmin screen. At 161 g it's the heaviest Garmin, and at $699.99 the most expensive.

Garmin Edge 850 and 550: compact Garmins

The Edge 550 and 850 share a 2.7-inch, 420 × 600 display and the same claimed battery life: up to 12 hours in demanding use, or 36 hours in battery saver mode. They also share incident detection, LiveTrack, hazard alerts and Varia compatibility.

The difference is the extras. Garmin's launch release lists the Edge 850 as adding a touchscreen (alongside buttons), a speaker, Garmin Pay and an on-device course creator. The Edge 550 is button-only and costs $100 less.

Best for: riders who want Garmin's training and safety features in a smaller, lighter unit. Choose the 850 for touch and audio features, or the 550 if you prefer buttons and want to save money.

Garmin also still sells the older Edge 840 ($449.99) and Edge 1040 Solar ($699.99). Both remain capable, but the 850 and 1050 are the newer models.

Wahoo ELEMNT BOLT 3: small, simple and light

The BOLT 3 is Wahoo's compact computer. Wahoo lists a 2.3-inch, 240 × 360 colour screen, buttons only, up to 20 hours of battery, 32 GB of storage and an IPX7 rating. Its weight is about 84 g, the lightest of the seven devices here.

Wahoo sets most things up through its phone app. On the bike, the BOLT 3 offers turn-by-turn navigation, Back on Track rerouting to your loaded route, Retrace, Route to Start and free world maps downloaded over Wi-Fi. Wahoo's SUMMIT climbing features detect climbs even without a preloaded route. The BOLT 3 supports ANT+ radar such as Wahoo's TRACKR RADAR.

Best for: riders and racers who want a light, simple computer and are happy to set it up from their phone. It's the cheapest device here at $349.99.

Wahoo ELEMNT ROAM 3: Wahoo with a touchscreen

The ROAM 3 adds a 2.8-inch, 320 × 480 touchscreen (Wahoo says it's glove-friendly, with pinch, zoom and swipe), a speaker for voice turn-by-turn directions and up to 25 hours of battery. Wahoo lists 109 g, 64 GB storage and IPX7.

Navigation is a step up from the BOLT 3: Wahoo lists smart rerouting and Take Me To, which lets you pick a point on the map and navigate there from the device. It also has SUMMIT climbing features and radar support.

Best for: riders who want Wahoo's app-based simplicity with a bigger touchscreen and more on-device navigation.

Wahoo ELEMNT ACE: the big screen with a wind sensor

The ACE is Wahoo's flagship and the largest device here: a 3.8-inch, 480 × 720 touchscreen, up to 30 hours of battery and 208 g. Its unique feature is an integrated wind sensor. Wahoo says it provides Air Speed, Wind Impact and Wind Grade data, measuring the headwind or tailwind you're riding into.

It also has preloaded global maps, voice turn-by-turn directions, Take Me To, Back on Track, Komoot and Trailforks sync, SUMMIT Freeride for climbs without a route, a speaker, a digital bike bell and radar support.

Best for: riders who want the biggest screen and are curious about wind data, and don't mind the size and weight.

Hammerhead Karoo: smartphone-style screen

Hammerhead (owned by SRAM) calls its current model simply Karoo, the third generation, released in May 2024. Hammerhead's store now redirects to SRAM's shop. There is no newer Karoo model.

Hammerhead lists a 3.2-inch, 480 × 800 (292 ppi) transflective touchscreen with Gorilla Glass and water-droplet rejection, plus physical buttons. The touchscreen can be locked so you control everything with the buttons. It weighs 118.1 g and is rated IP67. Battery is quoted as "35+ hours" with battery-saving customisation.

Features include surface-specific routing, free global maps, instant automatic rerouting, CLIMBER climb detection with or without a route, ANT+ radar support with a car-track sidebar, and deep integration with SRAM AXS components. Unlike the older Karoo 2, the current Karoo has no SIM card: live tracking uses the Companion App or Wi-Fi.

Best for: riders who want a phone-like display and fast navigation, especially SRAM AXS users.

Choosing by what matters to you

Incident detection is listed by Garmin on all three Edge models. Wahoo and Hammerhead don't list it in the specifications we checked, so check with them if crash detection matters to you.

What changed from older models

If you're comparing with an older computer:

• Wahoo ELEMNT BOLT v2 (2021) and ROAM v2 (2022) are no longer listed on Wahoo's US site. Wahoo lists the BOLT v2 at 2.2" 240×320 with up to 15 hours, and the ROAM v2 at 2.7" 240×400 with up to 17 hours. The third-generation models add colour screens with 16 million colours, more storage and longer battery life.
• Garmin Edge 840 and 1040 are still sold, but the 850 and 1050 bring larger, sharper displays. The 840 has a 2.6" 246×322 screen; the 850 has a 2.7" 420×600 screen.
• Hammerhead Karoo 2 needed a SIM for live tracking. The current Karoo doesn't, and Hammerhead offers older-Karoo owners an upgrade discount.

Frequently asked questions

Which bike computer has the longest battery life?

On manufacturers' claims, the Garmin Edge 1050 offers up to 60 hours in battery saver mode (20 hours in demanding use). Wahoo's ACE claims up to 30 hours, and Hammerhead quotes 35+ hours with battery-saving settings. Brands measure differently, so compare carefully.

Which is the lightest?

The Wahoo ELEMNT BOLT 3, at about 84 g.

Do any of these computers have LTE?

No. None of the current Garmin, Wahoo or Hammerhead models listed here has a cellular connection; they use your phone or Wi-Fi for live features.

Which have touchscreens?

The Garmin Edge 1050 and 850, Wahoo ROAM 3 and ACE, and Hammerhead Karoo have touchscreens plus buttons. The Garmin Edge 550 and Wahoo BOLT 3 are button-only.

Do they work with radar?

Yes. Garmin Edge computers work with Garmin Varia radars, and Wahoo and Hammerhead support ANT+ radar devices.

Do I need a subscription?

None of these computers requires a paid subscription for its core navigation and ride recording, according to the features each brand lists. Third-party training platforms may charge separately.

Are older models like the Edge 840 still worth buying?

They can be, especially at a discount. Garmin still sells the Edge 840 and Edge 1040 Solar, but the 850 and 1050 have sharper, larger displays. Wahoo's BOLT v2 and ROAM v2 are no longer listed on its US site, so check support plans before buying old stock.

Final verdict

For most riders, the Garmin Edge 850 or Wahoo ELEMNT ROAM 3 is the sweet spot: compact, with a touchscreen and strong navigation. Choose the Edge 1050 or ELEMNT ACE for the biggest screens, the BOLT 3 or Edge 550 to save weight and money, and the Karoo for a phone-like display and SRAM integration. Whichever you choose, make sure it supports your sensors and the safety features you care about.

Official sources

• Garmin: Edge 1050, Edge 850, Edge 550, Edge 550/850 launch release
• Wahoo: ELEMNT BOLT 3, ELEMNT ROAM 3, ELEMNT ACE, bike computers
• Hammerhead: Karoo (SRAM shop), Karoo hardware specifications

Equipment mentioned in this guide

• Garmin Edge 1050 bike computer
• Wahoo ELEMNT ROAM 3 GPS bike computer
• Hammerhead Karoo GPS bike computer

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