F4 Smart Bracelet Watch Band
F4 স্মার্ট ব্রেসলেট ওয়াচ ব্যান্ড
Heart Rate & Blood Pressure Monitor: Accurately record real-time heart rate and manual blood pressure calibration, get a appropriate physical exercise plan. ll day Activity Tracker: Automatically tracker your 24 hours activities like steps, distance, calorie burned, activity time, etc.