AQ-S820W-3B is a sporty Casio analog-digital watch featuring a black resin case paired with a green resin strap for a rugged and functional look. It is powered by a solar-charged quartz movement and combines an analog display with a digital screen, including confirmed features such as an LED light, stopwatch, and alarm, making it a reliable and low-maintenance choice for everyday wear, casual use, and active lifestyles.