Wristband - Heart Rate & Fitness

• Pure pulse continuous, automatic wrist-based heart rate tracking to better measure calorie burn all day
• Maximize your workouts using simplified heart rate zones (fat burn, cardio and peak)
• See call, text & calendar notifications on the OLED display; automatically track how long and how well you sleep and wake with a silent vibrating alarm
• Get a better understanding of your fitness level and see how you can improve over time with a personalized cardio fitness Score; use connected GPS during run mode to see real-time stats.
• Track all-day activity like steps, distance, calories burned, floors climbed and active minutes; find moments of calm throughout your day with personalized guided breathing sessions.
• The minimum and maximum circumference range between 140 - 170 millimeters

Product Dimensions: 8.6 x 0.5 x 0.9 inches ; 0.96 ounces
Shipping Weight: 12 ounces 
Batteries 1 Lithium Polymer batteries required. (included)