Strap materialSilicone strap Case materialPlastic case Case diameterDiameter: 40,2 mm. Case propertiesIP68 waterproof: can be submerged from 1 to 3 m deep and is sealed against dust. Screen typeMineral crystal Functions8 TOUS dials, with an interchangeable dial from the TOUS WEAR APP, hours, minutes, seconds, month, day, day of the week, daily activity with step counter, calorie counter, distance traveled in miles or kilometers, sports (walking, running, climbing, cycling, basketball and other sports), vibration alarm clock, heart rate, sleep monitoring, weather information, 1/100 second stopwatch, 3 games and notifications (calls, WhatsApp, email, SMS, Facebook, etc.) MovementsDigital quartz movement Strap buckleBuckle closure CollectionSmarteen