Sportline 12-Function ECG Heart Rate Monitor Watch with Patented 1-Touch Technology, Black: * Also measures calories burned and percentage of maximum heart rate * Calorie Genius 24-hour calorie burn technology * Tracks distance covered and speed * 12-function design * Patented 1-touch technology * In and out of zone alarms * Dimensions: 8.5"L x 2.75"W x 5.5"H * Battery type: lithium primary * Model# SB1064BK * 5-year warranty