Grand Seiko Heritage Collection Automatic with Manual Winding 38mm Watch Screw In Crown Features Movement: U680†Eco Drive Case Size: necklace Features Movement: U680†Eco Drive Case Size: 45mm Water Resistance: 20†bar (200†metres) Dial Colour: Blue Synchronized to Atomic Clock for Superior Accuracy Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 43 World Cities 1 100 Second Chronograph Measures up to 24 Hours Perpetual Calendar†Dual Time (Second Time Zone) 2 Alarms 99 Minute Countdown Timer Digital Backlight Display Coordinated Universal Time (UTC) Display Power Reserve Indicator with its highest grade D color the watch makes a classic impression on the wrist A masterpiece of design