Haylou RS4 Plus LS11 waterproof smart watch has a new fantastic 1.78" AMOLED display, 105 sports modes and all-day monitoring of your health and activity. This watch will inform you daily about your heart rate, oxygen saturation, temperature, stress level, sleep quality and training results in real time. In addition, long-lasting battery, waterproof design and an adjustable strap make the Haylou RS4 Plus LS11 even more comfortable to use. - 105 sports modes to monitor your daily activities - Alarm clock, stopwatch, pedometer, monitoring of menstrual cycles, notifications and much more - More than 100 elegant wallpapers - IP68 waterproof for all weather conditions - Adjustable strap perfect for your wrist - 230mAh battery guarantees 10 days of autonomy during standard use Specification: - Bluetooth: 5.1 - Display: 1.78", AMOLED - Resolution: 368 × 448, 60Hz - Sensors: pulse, motion, SpO2 - Waterproof: IP68 - Battery: 230mAh - Battery autonomy: up to 10 days - Compatible OS: Android 6.0 or later, iOS 11.0 or later - Application: Haylou Fun - Watch dimensions: 45.2 x 37.2 x 10.4 mm - Strap dimensions: 252 x 20 mm - Weight (with strap): 57.6g