The Haylou RS5 smartwatch features a large 2.01-inch AMOLED display, Bluetooth calling, over 150 sports modes, and advanced health monitoring, including heart rate, blood oxygen (\(SpO_{2}\)), and sleep tracking. It has an IP68 waterproof rating, a battery life of up to 9 days for typical use, and is compatible with both iOS and Android devices through the Haylou Fun app.