MTNKS Smartwatch-Shadow,E Most Comfortable 1.4 inch OLED Display, Android Wear 2.0,Compatible with iOS and Android, Google Assistant Android Wear 2.0. Get your favorite apps and watch faces. Request a car ride. Perfect your golf swing. Explore a new neighborhood. With thousands of Android Wear apps, there's no limit to what you can do Follow your fitness.Track walks, runs, rides, heart rate and strength training with Google Fit and your favorite fitness apps. Get coaching, measure your heart rate, and even stream music, right from your wrist. Your personal voice assistant. Meet Your Google Assistant. Bring Google Assistant to your wrist. Find answers and get things done even when your hands are full. Reply to a friend that youre running late, remind yourself to call mom, or ask for directions. Just hold the power button or say "Ok Google.Phone calls only compatible for android device now. If you meet abnormal battery capacity, like sudden drop or short battery life etc. It is not the quality issue. Please charge the watch more 2hrs before you start to use it. And use the watch till battery empty and charge it up to full for 1-3cycles, the battery capacity indicator will be on right status. 30-day money-back guarantee for any reason, 12-month warranty for quality-related issues.