Garmin Edge 540, Compact GPS Cycling Computer | Button Controls, Targeted Adaptive Coaching, Advanced Navigation, Up to 26 hours

Features

As described by the manufacturer on Amazon.

• Advanced GPS cycling computer with button controls combines superior navigation, planning and performance tracking, cycling awareness and smart connectivity
• Battery life: up to 26 hours in demanding use cases; up to 42 hours in battery saver mode
• View daily suggested workouts and training prompts on screen; based on your event, get personalized coaching that adapts to your current training load and recovery when riding with a compatible power meter and heart rate monitor
• Find your way in the most challenging environments with multi-band GNSS technology that provides enhanced positioning accuracy
• See remaining ascent and grade when climbing so you can gauge your effort with the ClimbPro ascent planner, now available on every ride — no course required; view on your Edge device and in the Garmin Connect app on your smartphone for ride planning
• Classify your strengths as a cyclist, and compare your cycling ability to the demands of a specific course, so you can focus your training and improvement in the right areas, when paired with your compatible power meter and heart rate monitor
• Manage your efforts with the power guide feature, which recommends power targets throughout a course, when paired with your compatible power meter

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