The ISW-O15 (often called itel Storm Plus O15) is a budget smartwatch designed for everyday fitness and smart notifications.It features a 2.01-inch HD display, Bluetooth calling, heart rate and SpO₂ monitoring, sleep tracking, and 100+ sports modes. It also supports IP68 water resistance, smart notifications, and basic tools like music control and alarm functions.With a long battery life (around 5–7 days depending on use), it is mainly built for fitness tracking, calls, and daily smart use at an affordable level.