(Refurbished) Amazfit Stratos Multisport Smartwatch by Huami with VO2max,Heart Rate,Activity Tracking, GPS, 5 ATM WaterResistance (A1619, Black) (43308-976)

Don’t miss a beat: track every aspect of your daily fitness – steps taken, distance traveled, calories burned, heart rate, and sleep quality – and optimize your performance with advanced vo2max metrics and exercise load (TD) and recovery time recommendations.
The stratos is the ultimate smartwatch for today’s serious athlete. The smartwatch in lineup of fitness wearables, the stratos combines advanced performance tracking technologies and smart convenience features in a sleek, sophisticated design
Achieve your personal best: on the trail, in the gym, or even in the pool, the stratos can help you take your game to the next level with gps + glonass route tracking and special sport modes for running, walking, cycling, swimming, elliptical machine, mountaineering, trail running, triathlon, skiing, tennis and soccer
Don’t miss a beat: track every aspect of your daily fitness – steps taken, distance traveled, calories burned, heart rate, and sleep quality – and optimize your performance with advanced vo2max metrics and exercise load (TD) and recovery time recommendations
Stay connected: the stratos is the perfect companion to keep you organized and productive all day long. Receive notifications for emails, sms, phone calls, facebook, twitter, linkedin, snap, slack, weather forecasts, and other apps from your mobile phone. Then rock out to your favorite workout tunes with the onboard music player