Article ID : 00206441 / Last Modified : 09/01/2019

Questions regarding the wireless connection of FES Watch U

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Q: What is the supported wireless communication system?
A: Bluetooth Standard 4.1 (Bluetooth Low Energy)

Q: I cannot connect the watch and the smartphone.
A: Make sure that the connection icon  is displayed on the watch.
If the  (Bluetooth) icon is not displayed on the watch, press the button on the watch for at least 2 seconds.



If the connection cannot be made, take off your watch and bring your smartphone close to the antenna of the watch so that the connection becomes stable.

Q: The connection between the watch and smartphone becomes interrupted.
A: The connection depends on the usage environment and the performance of your smartphone.

  • Make sure that you are not trying to establish the connection near devices that emit frequencies in the 2.4 GHz band, such as Wi-Fi router and microwaves, or in an area where radio waves are concentrated.
  • If the watch remains disconnected from the smartphone for more than one minute, the connection icon will disappear and the connection will be canceled.