For same is my Citizen EcoDrive Perpetual Calendar E870-S104637. Price: $275 (US Shipping included, international shipping available at cost). This Citizen is a perpetual calendar watch, meaning that once you set the day, date, time, month, year, daylight savings time, and leap year status, the watch will literally never need adjusting again. This feature is particularly desirable when paired with EcoDrive models, because the EcoDrive means that the watch also never runs out of battery. Notably, this particular model also comes with a "secondary time" function, so for those who travel between two time zones frequently, with the quick press of a button, you can switch back and forth between those two time zones. The watch is also of the more desirable "grey" dial. While many exist with a black dial, the grey appears to be significantly more rare, and in my opinion much more elegant. Paired with a sapphire crystal and water resistant up to 10 bar (328 ft.) - this watch will literally outlive you if you fall into the Mariana Trench, making it perfect for scuba diving as well. This watch is a used watch, and I've worn it several times, and has some small signs of wear on the bracelet, but no scratches on the crystal or case. I tested this watch today and found it to be in working order. Trying to sell it because I'm replacing it (ironically) with another Citizen.