Haylou RS3 LS04 – Haylou’s most technologically advanced smartwatch. 1.2″ AMOLED display, 390×390 px resolution, metal construction, integrated GPS from Sony, waterproof up to 5ATM (50m), call, sms and app notifications from your phone, connection with Haylou FUN mobile app via Bluetooth 5.0, battery life up to 21 days, heart rate monitoring, blood oxygenation SpO2 and sleep quality, selection of 14 sports modes.