Fitbit Charge 2 Heart Rate + Fitness Wristband: Product Features: PurePulse® Continuous heart rate Track heart rate all-day & during workouts to better measure calorie burn, optimize workout intensity using heart rate zones, and better understand your health with resting heart rate.

Track all daily activity levels Track your heart rate, steps taken, stairs climbed, calories burned, distance traveled and active minutes.

Better understand your sleep quality Monitor how long and how well you sleep. Wake peacefully without disturbing your partner with the silent, vibrating alarm.

Relax with guided breathing sessions The Relax experience on Charge 2 helps you find moments of calm in your day with personalized guided breathing sessions based on your heart rate.

Track and improve your fitness level Find out how fit you are with a snapshot of your Cardio Fitness Level and Score (based on VO2 max), viewable in the Fitbit app.

Track specific workouts & get real-time stats Get more precise tracking and actionable, real-time stats with Multi-sport modes and Connected GPS so you can make instant adjustments during your workouts and improve over time

Sleek design with large OLED display A sleek, comfortable design perfect for all-day and night wear with a large interactive display, customizable clock faces and interchangeable bands

Smartphone notifications Easily view smartphone notifications on the go and stay connected to what matters most with call, text and calendar alerts

Features: daily alarms, water resistant, stopwatch Activities Tracked: Total Steps, Trip Distance, Calories Burned, Continuous Heart Rate, sleep quality, sleep interruptions, Sleep Duration Battery Charge Life: Up to 25 Hours Battery required, included: Device Material: Rubber: Includes: Instructions, USB Cable Operating System: Android, Apple iOS Wired Connectivity: USB Wireless Technology: Bluetooth

Wrist Band Size: L 6.7" - 8.1"