CARE YOUR HEALTH FROM YOUR WRIST: You can measure your blood oxygen saturation and understand your physical state Ideal for high-intensity sports such as marathon and gym workouts. V7 smartwatch also professionally analyzes sleep quality to help you adjust your sleep habits. It even monitors your 20-minute daily nap MULTI -FUNCTION SMART WATCH: Equipped with 1.7"HD Extra-large full touch screen. SKG smartwatch can accurately track your health metrics (sleep and stress level). Impressive 8-day battery life between a 2h flash charge. 14 ACTIVITY TRACKING: This fitness sport watch has 14+ sports modes check all-day activities data like steps, distance. Water-resistant up to 50 meters, you can wear the V7 smart watch for swimming and it will record your achievements even under water. APP SUPPORT FOR ANDROID SAMSUNG IPHONE:The SKG V7 smart watch is compatible with iOS 9.0+ & Android 6 +, Bluetooth 5.2 below smartphones. Download and install "VeryFit" APP. SKG ALWAYS STAY WITH U: You never want to spend money to buy an unhappy shopping experience. So do we. SKG is committed to providing excellent products and 12 months waranty services .If you have any questions, please don’t hesitate to contact us with any problem.