The Redmi Watch 3 is a lightweight and stylish smartwatch that offers a 1.75-inch AMOLED display with vivid colors and a high resolution. It is designed for fitness tracking with sensors like heart rate, SpO2, and accelerometer. With a 5ATM water resistance rating, it can withstand depths of up to 50 meters, making it suitable for swimming. The watch also includes GPS and NFC support but lacks advanced connectivity options like Wi-Fi and cellular functionality. With a 289 mAh battery, it provides long-lasting performance for daily use.