Product Details
Citizen Eco-Drive Blue Dial Perpetual Calendar Men's Watch

Features:
• Perpetual Calendar
• 1/20 Second Chronograph - Measures up to 60 Minutes
• 12/24 Hour Time
• Dual Time
• Alarm
• One-Way Rotating Elapsed-Time Bezel
• Non-Reflective Crystal
• Screw-Back Case
• All Titanium
• Foldover Clasp with Hidden Double Push Button
• Water Resistant to 333 ft.(100m)
• Never Needs A Battery

Specifications:
• Movement Caliber: E812
• Maximum Power Reserve at Full Charge: 120 Days - 270 Days with Power Save
• Low Charge Warning: 5 Days
• Charging Time From Stop State
- Indoors, Office (500 Lux): 2 Hours
Usually, overhead office light is insufficient to achieve a full charge from a completely depleted power reserve. We recommend that you use natural outdoor light, or an incandescant light source 20" from the watch for charging a watch in this state. However, office light is sufficient for keeping your watch continually charged
- Incandescant 20" (3,000 Lux) 43 Hours
- Outdoors, cloudy (10,000 Lux) 12 Hours
- Outdoors, Sunny (100,000 Lux) 4 Hours