Marathon Digital Heart Rate Fitness System WATCH features Sport watch and hear rate monitor Target heart rate zone alarms Display with flipping system for easy reading of heart rate and elapsed time Oversized digits INDIGLO night-light All Day INDIGLO display NIGHT-MODE feature 100-hour chronograph with lap or split 100-hour countdown timer Month/day/date 12/24 hour time Alarm with 5 minute back-up Watch - Water resistant 50 meters Black resin strap STRAP View the strap See it in 3D Digital FM transmission for clear signals around exercise equipment and power lines Synchronized transmission prevents cross talk from other heart rate monitors Smart transmission for long battery life On-the-chest monitor provides continuous heart rate readings during even the most intense activities Comfortable elastic FAST WRAP. strap Replaceable batteries 2 year battery life Strap - water resistant to 30 meters (Strap will not provide accurate heart rates when under water.)

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