"LIGHTWEIGHT DESIGN THAT WRAPS THE GPS ANTENNA AROUND PART OF THE WRIST FOR A BETTER VIEW OF THE SKY, IMPROVING RECEPTION DURING TRAINING;HIGH-SENSITIVITY GPS RECEIVER PROVIDES FASTER ACQUISTITION TIMES AND IMPROVES TRACKING UNDER TREES AND NEAR TALL BUILDINGS;ROBUST ANT WIRELESS HEART RATE MONITOR WITH SOFTER, MORE COMFORTABLE CHEST STRAP AND SUPERIOR BATTERY LIFE ELIMINATES CROSS-TALK WITH OTHER DEVICES TO RELIABLY MEASURE AND SEND HEART RATE DATA, AND HELPS YOU TRAIN IN YOUR ZONE;CUSTOMIZABLE SCREENS LET YOU VIEW UP TO 12 DATA FIELDS ON 3 DATA SCREEN FOR IMMEDIATE FEEDBACK ON THE INFORMATION YOU NEED MOST WHEN TRAINING;CAPABILITY LETS YOU SEAMLESSLY TRANSITION BETWEEN SPORTS WITHOUT RESETTING THE UNIT, SO YOU CAN USE IT FOR RUNNING AND BIKING"