YOUNGFUN Fitness Tracker, App-Enabled Bluetooth 4.0 Water Resistance Smart Watch, Sleep and Heart Rate Monitor Compatible with Android and IOS Smartphones (Purple)

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Q:If can"t track your heart rate.... - http://www.wahmmo.com/youngfun-fitness-tracker-app-enabled-bluetooth-4-0-water-resistance-smart-watch-sleep-and-heart-rate-monitor-compatible-with-android-and-ios-smartphones-purple/ -