Features: Bio-Based Resin Case Bio-Based Resin Strap Solar Movement Mineral Crystal Grey Dial Digital Display Shock Resistant Carbon Core Guard Structure Mobile Link Auto Time Adjustment Easy Watch Setting Approximately 300 World Time Cities Notification Function Training Analysis Data Activity History Life Log Data Distance Correction By Smartphone GPS Sleep Analysis Data Phone Finder Charging System Compatible With Dedicated Cable (Requires Device With Type-A USB Terminal) Multi-Sport Function Training Analysis Wrist Heart Rate Measurement Blood Oxygen Level Measurement Black Ion Plated Bezel World Time Moon Data Sunrise, Sunset Time Display 1-Second Stopwatch 4 Daily Alarms With Snooze Smart Alarm With Snooze LED Backlight Full Auto-Calendar Button Operation Tone On/Off Power Saving Battery Level Indicator Airplane Mode Vibrator Vibration On/Off 12/24 Hours Display Month, Day And Date Display Screwed Case Back Buckle Clasp 200M Water Resistance Approximate Case size (L × W × H): 51.1 × 44.5 × 16.6 mm Approximate Case Diameter: 44.50 mm Approximate Case Thickness: 16.60 mm