Equipment > Accessories > Computers > Computers / GPS Head Units
Description
Dual control through touchscreen and physical buttons addresses a persistent challenge in cycling computers: choosing between intuitive touch operation and reliable physical controls. The Edge 840 combines both interfaces without compromise, providing seven physical buttons alongside a responsive 2.6-inch touchscreen. Two buttons on the left handle power and scrolling, three on the right manage selection and navigation, and two bottom buttons control lap and start-stop functions. The touchscreen responds to swipes and taps through gloves while the complete button set allows full operation when touch input becomes impractical during rain or technical terrain.
Compact dimensions measure 57.8mm wide by 85.1mm long by 19.6mm deep, fitting standard stem mounts or out-front positions without dominating handlebar space. The 2.6-inch screen displays 246x322 pixels across a 66mm diagonal, providing enough clarity for map navigation and multiple data fields while maintaining the portable profile that distinguishes mid-size computers from larger flagship models. At 84.9 grams, the computer sits lighter than the Edge 1040 at 126 grams but heavier than button-only competitors that sacrifice touchscreen functionality for weight savings.
Multi-band GNSS tracks satellite signals across dual frequency bands from GPS, GLONASS, and Galileo systems, maintaining accurate position data in environments where single-frequency GPS typically struggles. Tree-covered trails, urban street navigation between tall buildings, and canyon riding all benefit from enhanced signal processing that prevents the position drift and track wandering common to traditional GPS systems. Battery performance reaches 26 hours with all systems active including multi-band GNSS, sensor connections, navigation, and smartphone pairing, extending to 42 hours in battery saver mode that reduces GPS sampling rate and screen refresh.... Read More
Features
- 2.6" touchscreen with full 7-button physical controls
- Multi-band GNSS for enhanced position accuracy in challenging environments
- 246 x 322 pixel resolution on 66mm diagonal screen
- Up to 26 hours battery life with all systems active, 42 hours in battery saver mode
- Adaptive coaching with daily workout suggestions based on training load and recovery
- Power Guide with course-specific wattage recommendations
- Real-time Stamina tracking and Cycling Ability analysis
- ClimbPro free-ride mode activates automatically on any ascent
- MTB metrics including Grit difficulty rating and Flow descent scoring
- 32GB internal memory with two pre-loaded map regions
- On-device address search and course creator
- Trailforks integration with automatic fork preview
- USB-C charging port
- Compatible with ANT+, Bluetooth, and Wi-Fi sensors and devices
- Dimensions: 57.8 x 85.1 x 19.6mm
- IPX7 water resistance
- 84.9 grams













