Dura 2 Solar GPS Bike Computer

Why We Love It

The original Dura made its name on battery life, and the Dura 2 Solar keeps that while adding a bigger 3.5-inch touchscreen, faster maps and voice control. You can start a ride, drop a pin or set an alert by voice, so your hands stay on the bars. The screen works with gloves on and when your fingers are wet with sweat or rain. There's enough charge for a week of training or a multi-day bikepacking trip, and solar adds more whenever you ride in the sun. The COROS Dura 2 Solar sits low and neat on an out-front mount, whether you ride road, gravel, MTB or ultra-distance.

Talk Nerdy To Me

The anodised alloy upper casing, just 5.7mm thin at the bezel, protects the unit from the elements, while the woven carbon backplate is shaped for aerodynamic efficiency and a stable hold on rough roads, bringing the whole unit in at 99g. The edge-to-edge 3.5-inch Sharp MIP display was developed with COROS specifically for this computer: 336 x 620 resolution in a 17:9 ratio and 201 PPI, with an anti-reflective coating, sized to meet the latest UCI standards. Its 38Hz refresh rate gives the fastest map refresh of any MIP display. Battery runs to 120 hours in All Systems GPS mode or 70 hours in Dual Frequency + All Systems mode. COROS's 2:1 solar gain, an industry first, adds roughly two hours of battery for every hour you ride in sunlight, and USB-C takes it from flat to full in 2.5 hours. Onboard sensors include a barometric altimeter, accelerometer, gyroscope, electronic compass, temperature sensor, microphone and speaker.

COROS's most powerful processor to date renders maps quickly enough to pinch, pan and swipe mid-ride. The maps carry more detail and more customisation than before, with road and trail names shown directly on the map, clearer points of interest, better surface-type identification, turn-by-turn directions, climb alerts and offline re-routing when paired with the COROS App. Data fields are editable on the device or in the app, and pages can be set up for vertical scrolling or horizontal swiping. Build or import routes and structured workouts in the app, run an FTP assessment, and track power, VO2 max and training load, then sync to Strava, Komoot, Ride with GPS, TrainingPeaks, TrainerRoad and Zwift. It connects over Bluetooth, ANT+ and Wi-Fi to power meters, heart rate monitors, smart trainers, radar, lights, e-bikes and Shimano or SRAM electronic groupsets. Extras include a double-tap bike bell, a bike alarm, media and camera controls, post-ride voice notes, and an MCP connection for loading your ride data into ChatGPT or Claude.

Fast Facts

- 99g, with an aero carbon backplate and anodised alloy upper casing

- 3.5" Sharp MIP touchscreen with a 38Hz refresh rate, the fastest map refresh of any MIP display

- 120 hours in All Systems GPS mode, 70 hours in Dual Frequency + All Systems mode

- 2:1 solar gain: around 2 hours of battery for every hour of riding in sunlight

- Road and trail names, points of interest and surface types shown on the map, with offline re-routing

- Editable data fields with vertical and horizontal swipe navigation

- Voice control, touchscreen that works with gloves, and haptic buttons built into the solar panel

- Bluetooth, ANT+ and Wi-Fi, fits standard horizontal quarter-turn mounts