Citizen Promaster x Eco-Drive ft. 35th Anniversary (Limited Edition of 5,600 Pieces) Men Casual Formal Tonneau 200m Water Resistant Watch JY8146-54E JY8146 JY-8146 Celebrate 35 years of adventure with the limited edition Promaster Sky, blending cutting-edge tech and sleek design. This 46mm chronograph boasts a rose gold and black color scheme, advanced functions, and Eco-Drive technology. Only 5,600 pieces available worldwide, making it a rare collector's item. Caliber Number / Movement U680 (solar Eco-Drive) Power Reserve / Accuracy Approximately 6 months when fully charged (+/-15 seconds per month) Crystal Sapphire crystal (anti-reflective coating) Luminous / Light Luminous on hands and indexes LED light Case & Band Material Stainless steel case with metal band (three-fold clasp with push-button release) Water Resistance 200m / 20 bar Case Size Thickness: 13.8 mm Diameter: 45.7 mm Other Specifications Citizen Promaster x Eco-Drive ft. 35th Anniversary (Limited Edition of 5,600 Pieces) Flying distance and navigation calculations Screw case back Screw-down crown Alarm function (dual alarm) Countdown timer (up to 99 minutes) 1/100-second stopwatch (up to 24 hours, split time) Perpetual calendar World time function (43 cities) UTC (universal time coordinated) Global radio-controlled (Japan/USA/Europe/China) Power reserve indicator Hand correction function Overcharge prevention function Insufficient charge warning function Anti-magnetic, impact detection function Day, date, month, dual-time and 24-hour display Regular timekeeping (analog-digital display)