Mambo Smart Bracelet

brand new, never used Utilize 24/7 heart rate to accurately track calorie burn, resting heart rate & heart rate zones during workouts Track all day activity, including steps, distance, hourly activity, active minutes and calories burned. Enjoy up to 5 days of battery for daily progress without constant charging. Varies with use and other factors. Charge time (0 100 percent): 2 hours Automatically and conveniently record workouts like walks, swimming & bike rides in a snap with smart track. Stores heart rate data at 1 second intervals during exercise tracking and at 5 second intervals all other times Radio transceiver: Bluetooth 4.0. water resistant to 50 meters, Operating temperature: 14 degree to 113 degree Fahrenheit. Maximum operating altitude: 28,000 feet