WELROCK M4 Bluetooth Smart Band OLED Touch Display Activity Tracker Fitness Band

  • HD Color Screen, Message view, 45 Days Battery Life
  • Heart Rate, Blood Oxygen, Blood Pressure monitor. Steps and Distance count
  • Compatibility: Requires Android 4.3 or above, iOS 7.1 or above, Bluetooth 4.0 or above, download APP “Veryfit 2.0” from iOS Store or Google Play


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