Eco-Drive Technology harnesses the power of light to Fuel this Watch. In essence, it will never need a Battery. Sunlight and any artificial light are absorbed through the crystal and dial and the solar cell beneath the dial converts the light into electrical energy to power the watch. Eco-Drives revolutionary lithium-ion rechargeable cell stores enough energy to power the watch for up to 5 years, even in the dark.

• Promaster SST Collection.
• Brushed Titanium case and bracelet.
• Black dial with silver tone luminous hands and hour markers.
• Digital display with Red LED Back Light.
• Bi-Directional Rotating Slide Rule Bezel.
• Digital chronograph 1/1000 second.
• Split Lap Time.
• Average Speed Calculation
• Alarm.
• Digital calendar with day, date and month.
• World Time in 43 Cities.
• 99 minute Countdown timer.
• Precise Eco-Drive movement. Powered completely by light with 240-Day Power Reserve.
• Anti-reflective Scratch resistant mineral crystal.
• Fold over Push button deployment clasp.
• Water resistant to 200 meters/660 ft.
• Case measures 50mm diameter by 14mm thick.
• 5 Years Original Citizen's U.S. Warranty.