Designed for effortless recreation in pools and calm water, SUBLUE Swii combines the stability of a buoyant kickboard with smooth, dual-propeller assistance. Two speed settings provide controlled propulsion from 0.6 to 1 m/s, while up to 45 minutes of runtime, 100 kg of buoyancy support, an LED status display, and app-based safety settings make it a considered choice for families, resorts, and developing swimmers. Choose the standard configuration or add a 98 Wh or 158 Wh battery for extended sessions. Runtime varies with speed, water conditions, and use.