- Ecologically friendly, light powered Eco-Drive Caliber C650 Japanese-quartz movement; charges in natural sunlight or indoor light
- Max power reserve: 90 days to 4 Years with Power Save; low charge warning: 1.5 days; charge time from stop state to max charge: Incandescent Light – 29 hrs, Outdoors, Cloudy (10,000 Lux) – 9 hrs, Outdoors, Sunny (100,000 Lux) – 5 hrs
- Durable, hardened mineral crystal; case diameter: 44 mm; time and calendar in 22 time zones (30 cities); three world-time alarm functions; One-touch interchangeable analog-digital times
- Stainless steel case; black dial; 1/100 second chronograph measures up to 24 hours; 99 minute countdown timer; rotating slide rule bezel; Screw back case
- Water-resistant to 330 feet (100 M)
Amazon.com Product Description
The Citizen Eco-Drive Eco-Drive Skyhawk Flight Chronograph is designed to soar with unbridled stealth precision. This men’s Eco-Drive timepiece lifts off with time and calendar for 22 time zones, three world time alarms, 1/100 second chronograph that measures 24-hours, 99 Minute Countdown Timer, one-touch interchangeable analog/digital timing, rotating slide rule bezel, and power saver function all within a highly polished stainless steel case.
Citizen Men’s JR3000-51F Eco-Drive Skyhawk Chronograph Watch

I have always been a Citizen but this surpasses any watch I have ever seen.
Rating: 4 / 5
I received this watch with a little flaw.The dial has a nick in it.Just a small flaw.I don’t hope come again.
Rating: 3 / 5
I have a titanium version of this watch. This is a great looking watch, world time zones feature is priceless. I worn this watch everyday for 5 years. I would highly recommend this watch to anyone. I must admit that there are a few flaws. First of all, pins in bracelet seems to get loose over time. Crystal is not flat and gets scratched very easy. I wish there was a lcd back light but it would make that watch look cheaper. Bracelet finally broke at the Slayer concert, I think the watch got ripped of my hand in the moshpit. I was lucky to find watch and the bracelet 15 minutes later. Although bracelet broke off, the watch sustained just a few scratches after at least 300 people were stomping and going apesh#$it on them. I think, I’ll order a new bracelet or replace this watch with something expensive.
Rating: 4 / 5
A superbly designed watch, easy to use and understand. Combines practicity with a very stilish design.
Rating: 5 / 5
Nice flight watch, well built
Advantage
You get 3-4 times with one quick look
24 hour local time
24 hour GMT – ZULU time
Local time in AM PM format
Optional ability to set to display another time zone for 4 at once.
No battery change needed
Disadvantage
Not the most intuitive watch to change the settings on
I can just imagine using the slide rule at night in heavy IFR mountain flying.
Rating: 5 / 5