Wanna know "the Frequency of your heart by doing Extreme sport or Yoga" ? or "The moments you heart leaps up or quite inside" ? By wearing our MGCOOL Band 3 / 4 Fitness Tracker, all you have to do is just to raise your wrist up ! Training on your own goal: On the APP you can customize your exercise goals and training plans, trace your running with smartphone GPS, share your weekly health to social medias. Health and Sleep quality Analyse: Monitors your overnight sleep, the deep sleep and light sleep, through Smartphone app (iOS/Andriod) to check the sleep trend and help to improve the quality of sleep daily, weekly, and monthly. Durable Battery for 20-30 days Long: There is a 105mAh(B3) / 90mAh(B4) Li battery, which can stand by almost 20-30 days and enables the tracker keep working for 8-10 days. Battery life and charge cycles vary with use, settings and other factors. Comfortable wearing and of your own character : The strap of Band 3 / 4 is made from soft silicone with smooth finish for sporty look, and there are two colors of the band bracelet: black and red for your choice to fit your style. Specifications: Model:MGCOOL Band 3 / Band 4 Comaptible OS:Android 4.4 or above,iOS 8.0 or above BT Version: Bluetooth 4.0 G-Sensor: 3-axis APP Name: WearFit 2.0 Display size: B3 0.66″; B4 0,96" Display type:OLED Battery type:Li-ion Capacity:105mAh Working time:8-10 days Standby time:20-30 days Product size:248*24.2*11mm(B3); 255mm*22mm*11.2mm(B4) Package size:126mm*86mm*31mm Product weight:28g
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