Garmin Edge 840 Introduce the rider you are today to the one you'll be tomorrow. Improve every day with EdgeR 840, the touchscreen and button-controlled bike computer with targeted adaptive coaching (when paired with compatible sensors). It's the optimal gear to prepare you for upcoming races or personal milestones. In the Box Bike computer (57.8 x 85.1 x 19.6mm) Mounts (standard and out-front) USB-C cable Tether Documentation Extended Battery Life - The EdgeR 840 bike computer gets up to 26 hours of battery life in intense mode and up to 42 hours using battery saver mode. Adaptive Coaching - View daily suggested workouts and training prompts on screen; get personalised coaching based on your event that adapts to your current training load and recovery (when paired with compatible sensors). Multi-Band GNSS - Find your way with multi-band GNSS technology that provides enhanced positioning accuracy. ClimbPro ascent planner - See remaining ascent and grade when climbing so you can gauge your effort with ClimbPro, now available on every ride with no course necessary. Cycling ability and course demands - Compare your cycling ability to the demands of a specific course and focus your training in the right areas, when paired with your compatible power meter and heart rate monitor. Power Guide - Manage your efforts with the power guide feature, which recommends power targets throughout a course, when paired with your compatible power meter.