Round 4-level gray FSTN, 124 x 95 pixel display. Accurately tracks distance, pace & calories & displays on easy-to-read screen. ANT+Sport? wireless technology automatically transfers workout data to & from. computer when device is within range. Heart rate monitor. Access to Garmin? Connect which lets user analyze, share & store workouts. High-sensitivity GPS receiver. Innovative touch bezel interface. Water-resistant to IPX7 standards. Distance accuracy : 99% with clear view of sky. Temp range : -4?F¨C140?F. Easy-to-read display. Compatible with GSC 10? speed/cadence bike sensor. Compatible with foot pod. Watch features : time of day (12/24h), dual time zone (day/date) & daily alarm. Features Virtual Partner? courses, workouts & goals. Mark waypoints, back to start & save location. Zone training & heart rate zone training supports 5 heart rate zones. Transfer workouts & locations to other Forerunner? 405 devices. Includes USB ANT Stick?, AC adapter, charging clip & vinyl wristband. Dim : 2.98″H x 1.88″W x .65″D. Weight : 2.11 oz. Black.