Specifications: Model:Willful SW331 Bluetooth Version: Bluetooth 4.0 or later Waterproof Rating: IP67 Life-level waterproof, sweat-proof, rain-proof, but do not wear it when you are showering and swimming. Bluetooth Call: Call alert, hang up OS Support: Android 4.4 or higher version/ iOS 7.1 or higher version Screen: Multi touch 0.96" OLED Display: OLED Battery Voltage: 3.7V Battery: 65 mAh Li-Poly Working Time: 5 days (with Automatic Heart Rate Monitor ON), 8 days (with Heart Rate Monitor OFF). Charge Type: USB charge,no cable needed Charge Time: 1 to 2 hours Wrist Strap Size:5.5 inch to 8.3 inch Willful SW331 fitness watch can track heart rate, steps, sleep quality, calories burned, distance & workout duration. Now more rich features are added： Call/SMS notifications, sedentary alert, alarm alert, weather forecast, breathing guide, hang up, music control, stopwatch & remote camera control, etc. Multi-sport Modes： 14 sports are available including: Running, Walking, Cycling, Hiking (connect to the GPS, and you can check your motion tracks in the App), Trekking,Badminton, Fitness, Spinning, Treadmill, Yoga, Basketball, Football, Tennis, Dancing. Call/SMS Alert: Support Call/SMS & Alarm alert. Compatible with a wide range of App alerts: Calendar, Mail, Facebook, Twitter, WhatsApp, LinkedIn, Instagram, etc. Weather Forecast: Auto sync the weather information in your mobile phone to the smart band so that you can check the latest weather conditions conveniently. Guided Breathing: Help you adjust your breathing to find a moment of peace and comfort in your busy work. Package Include: 1 x Willful SW331 Fitness Watch 1 x User Manual
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