COROS Dura 2 Solar Gets Major Upgrade and Longer Battery Life

WHO:

BikeRadar - COROS launched the Dura 2 Solar, successor to the company’s first bike computer, the Dura Solar.

BIKEPACKING.com - Reviewer Neil Beltchenko tested the Dura 2 Solar; Logan Watts provided additional photos and shared his impressions.

BikeRadar - Coros said the thinner upper bezel improves aerodynamics.

BIKEPACKING.com - COROS said the solar panel is larger and more efficient than the previous model’s panel.

WHAT:

BikeRadar - The Dura 2 Solar costs £429 / $499 without the standard aluminium mount, or £479 / $549 with it.

BIKEPACKING.com - The unit costs $499 without a mount and $549 with one; its listed weight is 100g, compared with 101g for the original Dura.

BikeRadar - It has a 3.5-inch MIPS LCD display, carbon backplate, anodised-alloy construction, and a 5.7mm-thick upper bezel. BikeRadar reports a weight of 99g.

BIKEPACKING.com - The unit measures 117 × 58 × 17mm and has a 336 × 620-pixel display, 32GB of storage, a 17:9 aspect ratio, 201 pixels per inch, and a 38Hz refresh rate.

BikeRadar - The solar panel is 17% larger and 25% more efficient; Coros claims 120 hours of battery life, or 70 hours in dual-frequency mode, and up to two hours of battery gain per hour of riding at 75,000 lux.

BIKEPACKING.com - COROS claims 120 hours of battery life plus solar charging. Beltchenko reported that after a week of riding in Colorado, his test unit went from about 96% to 72% battery.

BikeRadar - New features include two haptic buttons, touchscreen controls, offline rerouting with previously downloaded maps and a sustained Bluetooth connection to the COROS app, climb alerts, and a digital bell activated by double-tapping the screen.

BIKEPACKING.com - Other features include voice controls, a bike-motion alarm with phone alerts within Bluetooth range, media controls, live tracking, custom waypoints, weather alerts, and compatibility with accessories including heart-rate monitors, radar lights, electronic drivetrains, and an Insta360 camera.

BIKEPACKING.com - The original Dura was priced at $250; the reviewer said COROS is discontinuing it. COROS said the original will receive a few Dura 2 firmware updates.

BikeRadar - The reviewer found the small haptic touchscreen controls difficult to use in initial testing and said the digital bell’s volume follows the unit’s overall volume.

WHERE:

BIKEPACKING.com - Beltchenko tested the device while riding in Colorado.

BIKEPACKING.com - The unit is manufactured in China.

WHY:

BikeRadar - Coros says the upgraded panel supports the Dura 2’s hardware demands while maintaining the previous model’s claimed battery life.

BIKEPACKING.com - COROS positioned the Dura 2 as a premium device with a larger screen, improved maps, faster processing, and a more responsive touchscreen.

HOW:

BikeRadar - The solar panel moved from above the screen to below it; Coros says it can deliver up to two hours of battery gain per riding hour under 75,000-lux conditions.

BIKEPACKING.com - Offline rerouting uses maps downloaded to the phone; routes can be synced through linked accounts such as Ride with GPS or imported as GPX files.

(UPDATED October 23, 2026 05:08 UTC)

COROS has launched the Dura 2 Solar, a premium successor to its first bike computer, with a larger screen, upgraded mapping and a more efficient solar panel. The panel is 17 percent larger than before, and COROS says it can add up to two hours of battery life for each hour of riding in bright conditions. The company claims up to 120 hours of battery life, or 70 hours in dual-frequency mode. During a week of testing in Colorado, one reviewer saw the charge drop from about 96 percent to 72 percent. The unit has a 3.5-inch display, 32 gigabytes of storage, touchscreen and haptic controls, offline rerouting, climb alerts and a digital bell. It also supports voice commands, live tracking and a range of cycling accessories. Prices start at $499 without a mount and rise to $549 with one.