Mikimoto 18K White Gold Diamond with Akoya Cultured Pearl Leverback Drop Earrings JewelleryGradGift and secured with a deployant SEE THROUGH CASE BACK and secured with a deployant closure equipped with pushers for ease of wear 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 set in 18K white gold 7mm Akoya cultured pearl lever back earrings