This is a woman's Citizen Eco-Drive stainless steel 2-tone watch, model E011-K15711, which I purchased as a gift for a family member -- it originally sold for $250.00 and is in perfectly-operating immaculate condition. The unique feature of this amazing timepiece is Citizen's Eco-Drive technology that powers the watch via everyday exposure to sunlight or ambient room light, which in turn stores that energy within an internal energy cell (no battery/battery replacement ever required). The energy cell provides up to 6 months of continuous run time even if the watch is stored for that entire time in complete darkness. Citizen claims an accuracy of ± 15 seconds per month, and when I tested it against my atomic clock it fell well within that stated range. The case is approximately 24mm in diameter (27mm including the crown) and approximately 7mm thick, making it suitable for even smaller wrists. The face is a gorgeous deep navy blue (almost looks black in dark settings) with luminous hour and minute hands and an analog date aperture window at the 3 o'clock position. It is water-resistant to 100 meters, making it safe for showering, sink splashes, inclement weather, and according to Citizen, swimming pools and even snorkeling (but this watch has never been exposed to any of the foregoing scenarios). In short, the entire timepiece has been meticulously maintained, including the matching 2-tone stainless steel bracelet with its easy-flowing links and simple yet secure safety-folding clasp -- all original manuals are included too. All photos were taken by me in my smoke-free home and honestly represent the excellent condition of this lovely Citizen Eco-Drive timepiece.