Brand new smart watch Samsung Galaxy Watch Active 2 (44mm, GPS, Bluetooth), Aqua Black (US Version) Features & details Better insights to reach your fitness goals get more out of every mile thanks to built-in pace coaching on the Galaxy Watch Active2; Its advanced sensors keep your pace to help you better achieve your run goals. Audio Playing Format-MP3, M4A, 3GA, AAC, OGG, OGA,WAV, WMA, AMR, AWB Comfortably sleek the Galaxy Watch Active2 is light enough to wear anywhere comfortably; It comes in aluminum or stainless steel and with a variety of faces, bands and finishes so it goes with anything Keep your beat; You can see if your heart rate is where you want it with Galaxy Watch Active2; Get automatically alerted if your watch detects a high or a low heart rate; This device and related software are not intended for use in the diagnosis of disease or other conditions, or in the cure, Mitigation, treatment or prevention of disease Level up your downtime; Galaxy Watch Active2’s built in sleep tracker offers valuable insights on how to get a better night’s sleep; It also monitors your stress level and helps you recently with the integrated calm app for this device and related software are not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment or prevention of disease Battery built for endurance: The Galaxy Watch Active2’s long lasting battery can go for more than a 5 day on a single charge, and you can always get a quick boost from your compatible Galaxy phone with wireless power share works with Qi compatible Samsung devices (compatibility with non samsung Qi devices not guaranteed); Speed and power efficiency of charge varies by device and may be restricted by cases or covers