STARK is a smartwatch, easy to use, ultra-light, which collects numerous data on our physical activity, providing detailed reports. Equipped with Waterproof technology to withstand water splashes and total immersion.  TAKE A SELFIE! With this option you can customize your Smartwatch with an exclusive watchface. Take a selfie and set it as a background image to have a truly unique effect! A WATCHFACE FOR EVERY MOMENT Classic, sporty or exclusive. Choose the watchface that you like best or that simply matches your look the most! CALL WAITING Thanks to cellular connectivity, a vibration on your wrist will alert you to an incoming call. You will no longer need to keep your smartphone under control! NOTIFICATIONS A vibration will alert you whenever a notification arrives on your smartphone. Useful to not miss any important news. PEDOMETER Every activity and movement done during the day is important and for this reason the pedometer function will help you to know how many steps you take daily. CALORIES Knowing the amount of calories burned during the day is essential to have excellent results during your workouts to reach your weight goal.   CARDIO TEST Heart health is a determining factor for your well-being and for this reason we offer you this tool to measure saturation, blood pressure and heart rate. WATERPROOF Designed to withstand water so you can enjoy your everyday life without worrying about water jets.   CPU nRF52832 Display 1.3” Color IPS full touch 240x240px Technology BT 4.1, G-SENSOR, Waterproof IP68 (3 ATM) Battery 180 mAh Li-polymer Compatibility iOS 9.0 or above and Android 4.4 or above Accessori Charger, user manual Other Functions Call waiting, Notifications and SMS, Pedometer, Cardio Tests, Stopwatch, Alarm, Calories, Distance, Sleep Monitor (sleep quality control), Sedentary reminder, Wrist sense, Music remote control. Please note we cannot offer refunds on products that have been opened, used or synced with a smartphone.