With the Fitbit Versa 2 smartwatch as your constant companion, you can easily focus on your health and fitness goals, it keeps you connected to your favorite apps, music, and notifications, too. Plus, there's even more gadgetry goodness for you to explore -- Fitbit Pay makes purchases a snap, Sleep Score analyzes your resting routines, and built-in Amazon Alexa is always available to answer questions, check the weather, set bedtime reminders, and whatever else you need to get through the day. From Fitbit. Fitbit is part of the Google family. Includes Versa 2 with small silicone wristband, large silicone wristband, and USB charging cable; voucher For use with iOS, Android, and Windows devices Bluetooth wireless technology 24/7 heart rate tracking Tracks steps, distance, calories burned, floors climbed, sleep Sleep tracking with Sleep Stages, Sleep Score Active Zone Minutes Guided breathing sessions Voice control Connected GPS with real time pace and distance Always-on display mode 20 exercise modes in app and on wrist SmartTrack automatic exercise recognition Stores approximately 300 songs Female health tracking Call, text, calendar alerts Find My Phone Fitbit Pay Built-in Amazon Alexa Battery lasts up to six days Swimproof Rechargeable lithium-ion battery Requires use of Fitbit app with compatible iPhone or Android devices; Google account required Small band fits wrists 5.5" toalways available