Blackview Smart Watch for Men, Fitness Trackers with Heart Rate Sleep Monitor, 5ATM Waterproof Activity Tracker Fitness Watch, Smart Watches for iPhone Android Phone 11111111111111111111111111111111111111111111111111111111111111111111111

Blackview Smartwatch Real-time Heart Rate Monitoring Blackview Smartwatch Provide a more efficient and accurate real-time personal measurement of your heart rate. Coupled with the intelligent AI heart rate algorithm, it monitors your heart rate throughout the entire day, even while you are swimming. Astonishing Power & 2 Weeks of Battery Life Blackview Smartwatch Have high operation perform...