Smartband K18 Waterproof 0.66" Heart Rate Monitor Sport Bracelet Fitness Tracker Smart Reminder Improve body metabolism and immune

Improve body metabolism and immune function

DDNS Supported Phone Systems: android system

The 3 positioning holes on the strap allows for different size of tube

just need to sew hands-on stitch with the hole pattern on the leather

make it not only an alarm clock

Smartband K18 Waterproof 0.66" Heart Rate Monitor Sport Bracelet Fitness Tracker Smart Reminder Improve body metabolism and immuneProduct Features: Perfect Smartphone Companion 24 Hour Real Time Heart Rate Monitoring It is the basic function of heart rate monitoring device, to monitor data for 24 hours everyday. You can make a clear understanding of your own heart rate and check your health situation anytime & anywhere. IP68 Waterproof Performance Compared with other smart bracelet, its IP68 waterproof rating can completely resist raining, showering. Even we don't have to take