SUPER LIGHTWEIGHT DESIGN: Amazfit Bip U Pro only weigh about 31 grams. An ultra-light design you can barely feel when striving for peak performance. LONG 9-DAY BATTERY LIFE: When fully-charged, you can relax and enjoy more than a full week of travel or work without worrying about chargers. MORE HEALTH TRACKING METRICS: The Amazfit Bip U Pro fitness smartwatch precise optical monitoring allows you to accurately track heart rate, blood oxygen levels, stress levels, breathing, quality of sleep, and sleeping patterns. SMART NOTIFICATIONS: Get an intelligent little pal to remind you of the incoming calls, text messages, apps, and calendars, alarm clock, weather forecast, and smartphone music and camera control. BUILT-IN GPS: The Amazfit Bip U Pro is equipped with Built-in GPS and GLONASS to track daily step count, distance traveled, and calories burned