PRODUCT FEATURES Track steps, distance, calories burned, hourly activity and active minutes Understand your body better with advanced features like Sleep Score, 24/7 heart rate and on-screen workouts Use Amazon Alexa Built-in to get quick news and information, check the weather, set timers and alarms, control your smart home devices and more all through the sound of your voice Based on your heart rate, time asleep and restlessness, in-app Sleep Score helps you better understand your sleep quality Control Spotify, download Pandora stations and add Deezer playlists plus store and play 300+ songs on your wrist With always-on display mode, your information's just a quick glance away during workouts 24/7 heart rate tracking: Get continuous heart rate tracking, follow trends over time & see real-time heart rate zones Fit in more fitness with on-screen workouts that coach you through each move and give you real-time stats on your wrist Track floors climbed Seamless streamlined modern design, anodized aluminum case and silky smooth silicone band Make secure purchases right from your wrist using Fitbit Pay Get call, text, calendar and smartphone app notifications when your phone is nearby. Plus send quick replies and voice replies on Android only Water resistant to 50 meters, which means you're free to wear it in the pool, in the shower, at the beach and beyond On-wrist Sleep Score. Smart Wake. Expanded always-on clock faces. Ability to ask Alexa to start an exercise (English & German). Clock face switcher--store up to 5 of your favorite clock faces and switch between them on your wrist. Exercise app--20 exercise modes on wrist WHAT'S INCLUDED Versa 2 Smart fitness watch Charging cable Small and large wristbands (2 bands total) PRODUCT DETAILS 0.47"H x 1.59"W x 1.56"D Weight: 0.01 lbs. Small band: fits wrists from 5.5'' to 7.1'' in circumference Large band: fits wrists from 7.1'' to 8.7" circumference Rechargeable lithium ion battery Battery life: 6+ days Battery charge time: 2 hours Water resistant to 50 meters Compatible with IOS & Android Requires free Fitbit app Wireless Bluetooth