Your First Step into Smart FitnessN/A1.43 Large Color ScreenN/ABlood-oxygen Level Measurement 1 | 5 ATM Water-resistance 2N/A60+ Sports Modes with High-precision GPS 3N/AN/A1.43N/ALarge Color ScreenN/AEnjoy a bigger and clearer viewN/AN/A320x302 pixel resolution creates an exquisite visual display making all incoming calls messages and reminders extremely clear.N/AN/A50N/AWatch Faces5N/ACraft and wear your lifestyle on your wristN/AN/A50 watch faces are available to suit your mood and outfit or you can upload your own photos for a more personalized watch face. The Bip U also supports animated watch faces that make every glance at your watch a unique experience.N/AN/ACustomizable Watch Face Modular6N/AHighlight whats important to youN/ASelect and display information important to you on your watch home screen such as time date weather heart rate and more with the customizable modular.N/AN/A31gN/ASuper-light BodyN/ADesigned for all-day comfortN/AAn ultra-light design you can barely feel when striving for peak performance.N/AN/A50mN/AWater-resistance2N/AStay smart while you swimN/AWater-resistant up to 50 meters you can wear the Bip U for swimming and it will track your movements and record your achievements even under water.N/AN/A60+N/ASports ModesN/Awith High-precision GPS3N/ALetting you exerciseN/Aat a higher levelN/AN/AThe Bip U records your exercise data to help you work out at a higher level. You can check your walking distance speed heart rate changes calories burned and other key factors such as whether you are exercising in your fat burning zone or cardiopulmonary strengthening zone based on your heart rate as well as providing instant alerts when your heart rate gets too high.N/AN/A3. Only Amazfit Bip U Pro has built-in GPS; Amazfit Bip U supports connection with mobile phone GPS.N/AN/ABlood-oxygen Level Measurement1N/AGrasp a new metric of healthN/AN/AThis smart watch is equipped with a newly upgraded biological optical tracking sensor the BioTrackerTM 2 that supports measurement of blood-oxygen saturation. When feeling unwell under mental stress engaged in intensive workouts such as marathons and gym sessions or in high-altitude and hypoxic environments you can immediately measure your blood-oxygen saturation and understand your physical state.N/AN/ASleep Quality MonitoringN/AImprove sleep quality forN/Aoptimal performanceN/AThe watch accurately monitors your sleep stages including those of deep sleep light sleep REM awake time and afternoon naps 7 and interprets the characteristics to provide you a sleep quality score and insights for improvement.N/AN/AHeart Rate Tracking8N/AMonitor your heart rate 24/7N/AThe Bip U can maintain continuous 24-hour heart rate monitoring. With its Huami-proprietary BioTrackerTM 2 PPG biological optical sensor the Amazfit Bip U delivers accurate heart rate measurements.N/AN/APAI Health Assessment System9N/ACompile vital health data into a simple scoreN/APAI is a health evaluation system that uses algorithms to transform complex information such as heart rate data activity duration and other health data into numerical values and presents this data to users.N/APAIs functionality is not limited by the time place or form of exercise. In addition it creates a customized health evaluation system for each user based on their unique health data offering everyone a unique experience.N/AN/AStress MonitoringN/ATrain your breathing toN/Aregulate stress levelsN/AThe watch supports stress monitoring and can provide breathing training to help balance your stress levels so that you can instantly know when you need to rest and relax.N/AN/AMenstrual Cycle TrackerN/AReceive alerts and plan aheadN/AThe Amazfit Bip U can help you record your menstrual and ovulation periods and alert you before they arrive so that you can plan ahead and avoid disruptions.N/AN/AOutstanding Battery Life4N/AExtend your adventureN/AWhen fully-charged you can relax and enjoy potentially more than a full week of travel or work without worrying about chargers. Enjoy from five to nine days of activity and progress with one less charger in your bag.N/AN/ADaily UsageN/AUp to 9-day battery life.N/AN/AHeavy UsageN/AUp to 5-day battery life.