Key features

• •【ALL-DAY ACTIVITY TRACKING】Tracker S4 has full suite of fitness tracking including all day heart rate monitoring, all day step counting, calories burned, miles covered, and active minutes and delivers in-depth reporting right to your smartphone.
• •【PURE-HEART MONITORING】Tracker S4 knows your beats with our 24 hours continuous heart rate sensor. Automatically sync the data to app 'Smart Wristband', analyze your fitness status in your move. Helping you get a better understanding of your fitness level and a healthy life.
• •【SLEEP QUALITY MONITORING】The fitness tracker S4 records your sleep quality EVERY NIGHT including how many light-sleep hours and deep-sleep hours you've taken last night, and wakes you up with silent vibrating alarms. Remember to turn on your APP before sleeping.
• •【HANDS-FREE FOR INCOMING NOTIFICATION】Receiving call, message and app notifications automatically to your wristband so you're always up to date and never miss things that matter. Extra features such as reminders to move, setting a daily fitness goal are inside this S4 tracker waiting for you to explore.
• •【WHY CHOOSE US】This is 2019's newest high-tech fitness tracker launched by Buture. We improve all functions on the basis of other brand products. Through precise data analysis and thousands of tests. Every BuTure product includes a 45 days money back & 18-month warranty. BUY WITH CONFIDENCE.