Used once and then stored. A protective film was applied to the screen when it was purchased new. Personally, I was attracted to the GPS function that allows you to view maps. Operating System: Wear OS 2.0 Features: Pedometer, Calorie Tracker, Notifications, GPS, Time Display Connectivity Technology: GPS Wireless Communication Standard: Bluetooth GPS: Built-in GPS Shape: Round Main Uses: Running, Cycling, Hiking, etc. (Supports over 70 sports) Main Functions: Sleep tracking, calorie consumption measurement, pedometer (linked with app), heart rate, speed, distance, direction, altitude measurement, displays outdoor maps and heatmaps on the watch, smartphone call notifications, MUSIC Waterproof: 50m/5 ATM water resistance Battery Life: 12 hours/sports mode (when using GPS), 2 days/smartwatch use Weight: 70g Over 70 sports modes Customize frequently used sports functions Records 24 hours of daily activity Release Year/Model Year: 2021 Department: Unisex Adult Wear OS by Google is packed with convenient features like Google Fit and Google Assistant. You can also add and use your favorite apps from Google Play.