[Citizen PROMASTER, an authentic sports watch that combines functionality, durability, and safety] Equipped with a high-resolution display and a newly developed movement. It combines the visibility and beauty of an analog clock with the functionality and tool-like design of a digital clock. Biomass urethane (Benebiol) band is a plant-derived urethane raw material (polycarbonate diol) developed by Mitsubishi Chemical Corporation. By using Beneviol as a raw material for urethane bands, we have achieved both high durability and environmental friendliness. [A combination watch that combines analog and digital] The display uses a high resolution MIP (memory in pixel) liquid crystal. Displays such as time and date are now more precise than before, providing excellent visibility both indoors and outdoors. The dial has a camouflage pattern design. It has a sharp design that combines thick hands, Arabic numerals and bar indexes, and emphasizes the visibility of the analog display. Functional aspects have also been updated, such as alarms that can be set at multiple times or on any day of the week. The dial ring is rotatable, and the direction can be measured by operating the crown at the 8 o'clock position. [People-friendly functions and performance] Equipped with a photovoltaic eco-drive, making it hassle-free. Converts a small amount of sunlight or light into electricity. Once fully charged, it will continue to operate for a long time even in the absence of light, so there is no need to regularly replace the batteries. Water resistant to 20 ATM, safe for water work and water sports. Convenient date and luminous (hands + index). [Product Details] Photovoltaic Eco Drive, Accuracy ±15 seconds/month, Photovoltaic generation: Approximately 3 years (when power save is activated), Water resistant to 20 ATM, Sapphire glass (non-reflective coating), Case: Stainless steel, Band: Biomass urethane (Be 1st class magnetic resistance, luminous (hands + indexes), dial parts: recycled materials, rotating ring with simple compass *Detailed operating instructions for the watch can also be found in the instruction manual on the manufacturer's website (model number: U822). [About charging] Eco-drive that uses light as energy. Once fully charged, it can operate for approximately 3 years (when power save is activated). When you first start using it, we recommend fully charging it under sunlight. Also, when you take it off your wrist, you can store it in a place where it is easily exposed to light, so you can use it in your daily life without worrying about it stopping.