MIO Drive Petite+ Heart Rate Monitor Watch with Biometric Sensor Technology: * % of max heart rate based on age, gender * ECG Heart Rate Monitor Watch With Biometric Sensor Technology measures resting heart rate for baseline * Drive Petite+ MIO Heart Rate Monitor Watch calculates calories burned * Utilizes the 3500 Calorie Countdown * Heart Rate Monitor Watch Without Chest Strap Displays time, date, weekday * Daily alarm * Backlit display * Heart Rate Monitor Watch Without Chest Strap includes count-up, count-down with warm-up, walk-run and repeat timers * Drive Petite+ MIO Heart Rate Monitor Watch is water resistant to 30 meters * User-replaceable battery * Manufacturer"s warranty included - see Product Guarantee for details About MIO MIO is the world"s first ECG Accurate Strapless Heart Rate Monitor, giving you the freedom to check your heart rate whenever and wherever you want. MIO makes it easy to monitor your heart rate throughout the day as well as while exercising. No more chest straps! Just accurate and easy-to-understand biofeedback to keep you informed and in tune with your body. MIO"s motto: Move. Measure. Motivate. * ECG accurate heart rate without a chest strap * Visual indicator of exertion level * Smart Touch ergonomic sensor technology * Dimensions: 9.5L x 1.25W x .5H inches * Manufacturer"s warranty included (see product guarantee)